A chromosome is a package of DNA containing part or all of the genetic material of an organism. In most chromosomes, the very long thin DNA fibers are...

The Y chromosome is one of two sex chromosomes in therian mammals and other organisms. Along with the X chromosome, it is part of the XY sex-determination...

A chromosomal abnormality or chromosomal anomaly is a missing, extra, or irregular portion of chromosomal DNA. These can occur in the form of numerical...

Chromosome 2 is one of the twenty-three pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 2 is the second-largest...

usually determined by a pair of sex chromosomes. Typically, karyotypic females have two of the same kind of sex chromosome (XX), and are called the homogametic...

Chromosome 1 is the designation for the largest human chromosome. Humans have two copies of chromosome 1, as they do with all of the autosomes, which are...

The X chromosome is one of the two sex chromosomes in many organisms, including mammals, and is found in both males and females. It is a part of the XY...

Chromosome microdissection is a technique that physically removes a large section of DNA from a complete chromosome. The smallest portion of DNA that...

of maternal and paternal chromosome copies, respectively, in each homologous chromosome pair—the form in which chromosomes naturally exist. Somatic cells...

Chromosome 11 is one of the 23 pairs of chromosomes in humans. Humans normally have two copies of this chromosome. Chromosome 11 spans about 135 million...

Sex chromosomes (also referred to as allosomes, heterotypical chromosome, gonosomes, heterochromosomes, or idiochromosomes) are chromosomes that carry...

Parasitic chromosomes are "selfish" chromosomes that propagate throughout cell divisions, even if they confer no benefit to the overall organism's survival...

Chromosome 21 is one of the 23 pairs of chromosomes in humans. Chromosome 21 is both the smallest human autosome and chromosome, with 46.7 million base...

by which one of the copies of the X chromosome is inactivated in therian female mammals. The inactive X chromosome is silenced by being packaged into a...

Homologous chromosomes or homologs are a set of one maternal and one paternal chromosome that pair up with each other inside a cell during meiosis. Homologs...

Y-chromosome DNA haplogroup is a haplogroup defined by specific mutations in the non-recombining portions of DNA on the male-specific Y chromosome (Y-DNA)...

Chromosome 17 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 17 spans more than 84 million...

genetics, a polycentric chromosome is any chromosome featuring multiple centromeres. Polycentric chromosomes are produced by chromosomal aberrations such as...

A karyotype is the general appearance of the complete set of chromosomes in the cells of a species or in an individual organism, mainly including their...

artificial chromosome (HAC) is a microchromosome that can act as a new chromosome in a population of human cells. That is, instead of 46 chromosomes, the cell...

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during cell division (mitosis/meiosis). There are three...

In human genetics, the Y-chromosomal Adam (more technically known as the Y-chromosomal most recent common ancestor, shortened to Y-MRCA), is the patrilineal...

of each chromosome (haploid). Additionally, prior to the division, genetic material from the paternal and maternal copies of each chromosome is crossed...

Chromosome 8 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 8 spans about 146 million...

Chromosome 13 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 13 spans about 113 million...

derivative chromosome (der) is a structurally rearranged chromosome generated either by a chromosome rearrangement involving two or more chromosomes or by...

a chromosomal disorder in which cells of females have only one X chromosome instead of two, or are partially missing an X chromosome (sex chromosome monosomy)...

Artificial chromosome may refer to: Yeast artificial chromosome Bacterial artificial chromosome Human artificial chromosome P1-derived artificial chromosome Synthetic...

syndrome, is an aneuploid genetic condition in which a male has an extra Y chromosome. There are usually few symptoms. These may include being taller than average...

Chromosome 7 is one of the 23 pairs of chromosomes in humans, who normally have two copies of this chromosome. Chromosome 7 spans about 160 million base...

Chromids, formerly (and less specifically) secondary chromosomes, are a class of bacterial replicons (replicating DNA molecules). These replicons are...

defined endpoints." By combining chromosomal translocation, chromosomal inversion, and chromosomal deletion, chromosome engineering has been shown to identify...

usually carries an X and a Y chromosome (XY), and the female usually carries two X chromosomes (XX). Other chromosomal sex-determination systems in animals...

Chromosome 9 is one of the 23 pairs of chromosomes in humans. Humans normally have two copies of this chromosome, as they normally do with all chromosomes...

Chromosomal instability (CIN) is a type of genomic instability in which chromosomes are unstable, such that either whole chromosomes or parts of chromosomes...

Chromosome 5 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 5 spans about 182 million...

second-most common condition due to a third chromosome at birth, after Down syndrome for a third chromosome 21. Trisomy 18 occurs in around 1 in 5,000...

Chromosome 6 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 6 spans nearly 171 million...

The list of organisms by chromosome count describes the numbers of chromosomes in the cells of various plants, animals, protists, and other living organisms...

The Philadelphia chromosome or Philadelphia translocation (Ph) is an abnormal version of chromosome 22 where a part of the Abelson murine leukemia 1 (ABL1)...

All chromosomes in prokaryotes and eukaryotes can be subdivided into various chromosome regions. However, the most common ones are those occurring in...

The ZW sex-determination system is a chromosomal system that determines the sex of offspring in birds, some fish and crustaceans such as the giant river...

Chromosome 4 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 4 spans more than 190 million...

A dicentric chromosome is an abnormal chromosome with two centromeres. It is formed through the fusion of two chromosome segments, each with a centromere...

cell biology, chromosome territories are regions of the nucleus preferentially occupied by particular chromosomes. Interphase chromosomes are long DNA...

Chromosome 3 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 3 spans more than 201 million...

genomics, chromosome 22 is one of the 23 pairs of chromosomes in human cells. Humans normally have two copies of chromosome 22 in each cell. Chromosome 22 is...

In genetics, chromosome translocation is a phenomenon that results in unusual rearrangement of chromosomes. This includes "balanced" and "unbalanced"...

Chromosome 15 is one of the 23 pairs of chromosomes in humans. Like any autosome, humans normally have two copies of this chromosome. Chromosome 15 spans...

A ring chromosome is an aberrant chromosome whose ends have fused together to form a ring. Early observations of ring chromosomes were made during the...

syndrome caused by a chromosomal abnormality, in which some or all of the cells of the body contain extra genetic material from chromosome 13. The extra genetic...

Lampbrush chromosome are a special form of chromosome found in the growing oocytes (immature eggs) of most animals, except mammals. They were first described...

Satellite chromosomes or SAT-chromosomes are chromosomes that contain secondary constrictions. They are observed in acrocentric chromosomes. In addition...

Chromosomal landing is a genetic technique used to identify and isolate clones in a genetic library. Chromosomal landing reduces the problem of analyzing...

Chromosome condensation refers to the process by which dispersed interphase chromatin is transformed into a set of compact, rod-shaped structures during...

presence of an abnormal number of chromosomes in a cell, for example a human somatic cell having 45 or 47 chromosomes instead of the usual 46. It does...

A circular chromosome is a chromosome in bacteria, archaea, mitochondria, and chloroplasts, in the form of a molecule of circular DNA, unlike the linear...

Chromosome segregation is the process in eukaryotes by which two sister chromatids formed as a consequence of DNA replication, or paired homologous chromosomes...

Sex chromosome anomalies belong to a group of genetic conditions that are caused or affected by the loss, damage or addition of one or both sex chromosomes...

when a gene mutation (allele) is present on a sex chromosome (allosome) rather than a non-sex chromosome (autosome). In humans, these are termed X-linked...

Chromosome 18 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 18 spans about 80 million...

8 causes Warkany syndrome 2, a human chromosomal disorder caused by having three copies (trisomy) of chromosome 8. It can appear with or without mosaicism...

An autosome is any chromosome that is not a sex chromosome. The members of an autosome pair in a diploid cell typically have the same morphology (homomorphic)...

Eukaryotic chromosome structure refers to the levels of packaging from raw DNA molecules to the chromosomal structures seen during metaphase in mitosis...

also called marker chromosome 15 syndrome, idic(15), partial tetrasomy 15q, or inverted duplication 15 (inv dup 15), is a chromosome abnormality in which...

Chromosome 2q deletion is a chromosome abnormality that occurs when there is a missing copy of the genetic material located on the long arm (q) of chromosome...

genetic disorder caused by the presence of all or part of a third copy of chromosome 21. It is usually associated with developmental delays, mild to moderate...

Balancer chromosomes (or simply balancers) are a type of genetically engineered chromosome used in laboratory biology for the maintenance of recessive...

a chromosome rearrangement in which a segment of a chromosome becomes inverted within its original position. An inversion occurs when a chromosome undergoes...

characterized by the karyotype 47,XXX, is a chromosome disorder in which a female has an extra copy of the X chromosome. It is relatively common and occurs in...

A linear chromosome is a chromosome which is linear in shape, and contains terminal ends. In most eukaryotic cells, DNA is arranged in multiple linear...

Wolf–Hirschhorn syndrome (WHS) is a chromosomal deletion syndrome resulting from a partial deletion on the short arm of chromosome 4 [del(4)(p16.3)]. Features...

Trisomy 16 is a chromosomal abnormality in which there are 3 copies of chromosome 16 rather than two. It is the most common autosomal trisomy leading...

Chromosome 12 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 12 spans about 133 million...

is a specific, fixed position on a chromosome where a particular gene or genetic marker is located. Each chromosome carries many genes, with each gene...

In biology, the chromosome scaffold is the backbone that supports the structure of the chromosomes. It is composed of a group of non-histone proteins that...

The Calcutta Chromosome is a 1996 English-language novel by Indian author Amitav Ghosh. The book, set in Calcutta and New York City at some unspecified...

normal karyotype made up of A chromosomes, wild populations of many animal, plant, and fungi species contain B chromosomes (also known as supernumerary...

Chromosome jumping is a tool of molecular biology that is used in the physical mapping of genomes. It is related to several other tools used for the same...

Chromosome 10 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 10 spans about 134 million...

Haplogroup R1b (R-M343), previously known as Hg1 and Eu18, is a human Y-chromosome haplogroup. It is the most frequently occurring paternal lineage in Western...

Klinefelter syndrome (KS), also known as 47,XXY, is a chromosome anomaly. Subjects affected by the condition are almost always phenotypically male, with...

Polytene chromosomes are large chromosomes which have thousands of DNA strands. They provide a high level of function in certain tissues such as salivary...

chat syndrome is a rare genetic disorder due to a partial chromosome deletion on chromosome 5. Its name is a French term ("cat-cry" or "call of the cat")...

9P-) is a rare chromosomal disorder in which some DNA is missing or has been deleted on the short arm region, "p", of one copy of chromosome 9 (9p22.2-p23)...

Skewed X-chromosome inactivation (skewed X-inactivation) occurs when the X-inactivation of one X chromosome is favored over the other, leading to an uneven...

Chromosome 16 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 16 spans about 90 million...

chromatids together during cell division. This constricted region of chromosome connects the sister chromatids, creating a short arm (p) and a long arm...

The Boveri–Sutton chromosome theory (also known as the chromosome theory of inheritance or the Sutton–Boveri theory) is a fundamental unifying theory...

Full trisomy 9 is a rare and fatal chromosomal disorder caused by having three copies (trisomy) of chromosome 9. It can be a viable condition if the trisomic...

Chromosome 20 is one of the 23 pairs of chromosomes in humans. Chromosome 20 spans around 66 million base pairs (the building material of DNA) and represents...

animals this is often accompanied by chromosomal differences, generally through combinations of XY, ZW, XO, ZO chromosomes, or haplodiploidy. The sexual differentiation...

Normalized chromosome value (NCV) is a mathematical calculation for comparing each chromosome under tested in cell free DNA (cfDNA) for detecting genetic...

numbers of sex chromosomes. In order to neutralize the large difference in gene dosage produced by differing numbers of sex chromosomes among the sexes...

Chromosome 19 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 19 spans more than 61.7...

The monocentric chromosome is a chromosome that has only one centromere in a chromosome and forms a narrow constriction. Monocentric centromeres are the...

Y chromosomes are male-specific sex chromosomes; nearly all humans that possess a Y chromosome will be morphologically male. Although Y chromosomes are...

In genetics, chromosomal polymorphism is a condition where one species contains members with varying chromosome counts or shapes. Polymorphism is a general...

Haplogroup T-M184, also known as Haplogroup T, is a human Y-chromosome DNA haplogroup. The unique-event polymorphism that defines this clade is the single-nucleotide...

The Y Chromosome Consortium (YCC) was a collection of scientists who worked toward the understanding of human Y chromosomal phylogenetics and evolution...

example, the F-factor) integrated into its chromosomal DNA. The integration of the plasmid into the cell's chromosome is through homologous recombination. A...

Chromosomal deletion syndromes result from deletion of parts of chromosomes. Depending on the location, size, and whom the deletion is inherited from...

X-chromatin is an inactive X chromosome. In species with XY sex-determination (including humans), females typically have two X chromosomes, and one is rendered...

X chromosome reactivation (XCR) is the process by which the inactive X chromosome (the Xi) is re-activated in the cells of eutherian female mammals. Therian...

Genetic mosaicism can result from many different mechanisms including chromosome nondisjunction, anaphase lag, and endoreplication. Anaphase lagging is...

A bacterial artificial chromosome (BAC) is a DNA construct, based on a functional fertility plasmid (or F-plasmid), used for transforming and cloning in...

Yeast artificial chromosomes (YACs) are genetically engineered chromosomes derived from the DNA of the yeast, Saccharomyces cerevisiae [1], which is then...

an organism has at least one more chromosome than normal, i.e., there may be three or more copies of the chromosome rather than the expected two copies...

Trisomy 22 is a chromosomal disorder in which three copies of chromosome 22 are present rather than two. It is a frequent cause of spontaneous abortion...

syndrome, is a genetic disorder caused by a microdeletion on the long arm of chromosome 22. While the symptoms can vary, they often include congenital heart problems...

Haplogroup Q or Q-M242 is a Y-chromosome DNA haplogroup. It has two primary subclades: Q1/Q-L472 (also known as Q-MEH2) and Q2/Q-L275). These include numerous...

Chromosome 15q partial deletion is a rare human genetic disorder, caused by a chromosomal aberration in which the long ("q") arm of one copy of chromosome...

3 Chromosome 4 Chromosome 5 Chromosome 6 Chromosome 7 Chromosome 8 Chromosome 9 Chromosome 10 Chromosome 11 Chromosome 12 Chromosome 13 Chromosome 14...

biology/cytology (a subdivision of human anatomy), that is concerned with how the chromosomes relate to cell behaviour, particularly to their behaviour during mitosis...

or all of the large arm of human chromosome 13. Depending upon the size and location of the deletion on chromosome 13, the physical and mental manifestations...

Y-chromosomal Aaron is the hypothesized most recent common ancestor of the patrilineal Jewish priestly caste known as Kohanim (singular Kohen, also spelled...

1861 – May 4, 1912) was the American geneticist who discovered sex chromosomes. In 1905, soon after the rediscovery of Mendel's paper on genetics in...

a chromosomal rearrangement is a mutation that is a type of chromosome abnormality involving a change in the structure of the native chromosome. Such...

the addition of the rye chromosome 4R; this increases the size of the wheat anther and the amount of pollen. The 1R chromosome is the source of many crop...

rapidly progressing, the ability to assemble and align orthologous whole chromosomal regions from more than a few species is not yet possible. The intense...

Chromosome 14 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 14 spans about 107 million...

Y chromosome microdeletion (YCM) is a family of genetic disorders caused by missing genes in the Y chromosome. Many men with YCM exhibit no symptoms and...

Holocentric chromosomes are chromosomes that possess multiple kinetochores along their length rather than the single centromere typical of other chromosomes. They...

containing either an X or Y chromosome. If this sperm cell contains an X chromosome it will coincide with the X chromosome of the ovum and a female child...

A marker chromosome (mar) is a small fragment of a chromosome which generally cannot be identified without specialized genomic analysis due to the size...

part of a larger cell cycle in which the cell grows and replicates its chromosome(s) before dividing. In eukaryotes, there are two distinct types of cell...

Supernumerary chromosome could refer to: B chromosome in some animals and plants Small supernumerary marker chromosome (sSMC) in humans This disambiguation...

Ring chromosome 15 (sometimes denoted as r15) is a condition that arises when chromosome 15 fuses to form a ring chromosome. Usually, ring chromosome 15...

DNA is organized into long structures called chromosomes. Before typical cell division, these chromosomes are duplicated in the process of DNA replication...

entire piece of chromosome. Some chromosomes have fragile spots where breaks occur, which result in the deletion of a part of the chromosome. The breaks can...

Ring chromosome 20, ring-shaped chromosome 20 or r(20) syndrome is a rare human chromosome abnormality where the two arms of chromosome 20 fuse to form...

Non-random segregation of chromosomes is a deviation from the usual distribution of chromosomes during meiosis, that is, during segregation of the genome...

Chromosome conformation capture techniques (often abbreviated to 3C technologies or 3C-based methods) are a set of molecular biology methods used to analyze...

a rare genetic disorder caused by the deletion of small fragments of chromosome 3. Reported symptoms in patients with 3p deletion syndrome Include: intellectual...

also known as 49,XXXXX, is a chromosomal disorder in which a female has five, rather than two, copies of the X chromosome. Pentasomy X is associated with...

Down syndrome is a chromosomal abnormality characterized by the presence of an extra copy of genetic material on chromosome 21, either in whole (trisomy...

Microcell Mediated Chromosome Transfer (or MMCT) is a technique used in cell biology and genetics to transfer a chromosome from a defined donor cell line...

Europe are haplogroups of the male Y-chromosome found in European populations. The table below shows the human Y-chromosome DNA haplogroups, based on relevant...

characterized by a sex chromosome aneuploidy, where individuals have two extra X chromosomes. People in most cases have two sex chromosomes: an X and a Y or...

In human genetics, Haplogroup J-M172 or J2 is a Y-chromosome haplogroup which is a subclade (branch) of haplogroup J-M304. Haplogroup J-M172 is common...

structural abnormality in which the arms of the chromosome are mirror images of each other. The chromosome consists of two copies of either the long (q)...

An important aspect of the formation of the parent offspring is the chromosome, which is a structure of DNA which contains many genes. To focus more...

In human population genetics, Y chromosome haplogroups define the major lineages of direct paternal (male) lines back to a shared common ancestor in Africa...

E-M215 or E1b1b, formerly known as E3b, is a major human Y-chromosome DNA haplogroup. E-M215 has two basal branches, E-M35 and E-M281. E-M35 is primarily...

instances of a particular chromosome, instead of the normal two. A trisomy is a type of aneuploidy (an abnormal number of chromosomes). Most organisms that...

Chromosomal crossover, or crossing over, is the exchange of genetic material during sexual reproduction between two homologous chromosomes' non-sister...

Haplogroup J-M304, also known as J, is a human Y-chromosome DNA haplogroup. It is believed to have evolved in the Caucasus or Iran. The clade spread from...

method to determine the sequence of DNA up to the 1.3–7.0 kb range whereas chromosome walking is used to produce the clones of already known sequences of the...

features. The symptoms may vary, depending on the exact location of the chromosomal deletion. The condition is caused by a genetic deletion (loss of a segment...

marker chromosome (sSMC) is an abnormal extra chromosome. It contains copies of parts of one or more normal chromosomes and like normal chromosomes is located...

and measures a diminutive 25.4 × 33 cm. It was originally known as The Chromosome of a Highly coloured Fish's Eye Starting the Harmonious Disintegration...

A P1-derived artificial chromosome, or PAC, is a DNA construct derived from the DNA of P1 bacteriophages. It can carry large amounts (about 100–300 kilobases)...

Ring chromosome 18 is a genetic condition caused by a deletion of the two ends of chromosome 18 followed by the formation of a ring-shaped chromosome. It...

of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome. The masking or...

A chromosome or genotype in evolutionary algorithms (EA) is a set of parameters which define a proposed solution of the problem that the evolutionary algorithm...

percent of these individuals, the syndrome is caused by the father's Y chromosome's SRY gene being atypically included in the crossing over of genetic information...

Condensins are large protein complexes that play a central role in chromosome condensation and segregation during mitosis and meiosis (Figure 1). Their...

and humans are closely related. Genetic animal hybrids with different chromosome numbers decrease the probability of viable offspring and rarely occur...

(homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two complete sets of chromosomes, one from each...

Ring chromosome 14 syndrome is a very rare human chromosome abnormality. It occurs when one or both of the telomeres that mark the ends of chromosome 14...

the library of a genomic format that chromosome walking requires.[citation needed] Yeast artificial chromosome or YAC is a DNA molecule that is developed...

timing refers to the order in which segments of DNA along the length of a chromosome are duplicated. In eukaryotic cells, DNA replication takes place in the...

composed of two copies of the short arm of chromosome 18 in addition to the two normal copies of the chromosome. It is characterized by multiple medical...

genealogical research: autosomal (atDNA), mitochondrial (mtDNA), and Y-chromosome (Y-DNA). Autosomal tests may result in a large number of DNA matches to...

sequences associated with specialized proteins at the ends of linear chromosomes (see Sequences). Telomeres are a widespread genetic feature most commonly...

of two chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover...

made possible through heteromorphic sex chromosomes expressed as XY. Silene recently evolved sex chromosomes 5-10 million years ago and are widely used...

Haplogroup A is a human Y-chromosome DNA haplogroup, which includes all living human Y chromosomes. Bearers of extant sub-clades of haplogroup A are almost...

Chromosome No. 1 Syndrome is a genetic defect observed in embryos of newts from the genus Triturus. Approximately half of the eggs laid fail to develop...

Distal trisomy 10 is a rare chromosomal disorder that causes several physical defects and intellectual disability. Humans, like all sexually reproducing...

Institute (HHMI) investigator. He is best known for his work on mapping the Y-chromosome and on its evolution in mammals and expression during development. Page...

of a Y chromosome. Maternal gametes always contain an X chromosome, so the sex of the animals' offspring depends on whether a sex chromosome is present...

located on the Y chromosome. It is a form of sex linkage. Y linkage can be difficult to detect. This is partly because the Y chromosome is small and contains...

Haplogroup R1a (R-M420), is a human Y-chromosome DNA haplogroup which is distributed in a large region in Eurasia, extending from Scandinavia and Central...

within the FMR1 (fragile X messenger ribonucleoprotein 1) gene on the X chromosome. This results in silencing (methylation) of this part of the gene and...

Chromosome 21 (Spanish: Cromosoma 21) is a Chilean crime thriller television series co-created by Matías Venables and Nico Martínez Bergen. The series...

An acentric fragment is a segment of a chromosome that lacks a centromere. Because the centromere is the point of attachment for the mitotic apparatus...

distance between chromosome positions (also termed loci or markers) for which the expected average number of intervening chromosomal crossovers in a single...

condition caused by an abnormal extra chromosome, i.e. a small supernumerary marker chromosome. This chromosome consists of the entire short arm and a...

species, it is an abnormal product that forms whenever a chromosome or a fragment of a chromosome is not incorporated into one of the daughter nuclei during...

Jacobsen syndrome is a rare chromosomal disorder resulting from deletion of genes from chromosome 11 that includes band 11q24.1. It is a congenital disorder...

Chromosome 5q deletion syndrome is an acquired, hematological disorder characterized by loss of part of the long arm (q arm, band 5q33.1) of human chromosome...

haplogroups in populations of South Asia are haplogroups of the male Y-chromosome found in South Asian populations. South Asia, located on the crossroads...

may differ between the two chromosomes in a matching pair and that a few chromosomes may be mismatched as part of a chromosomal sex-determination system...

DNA sequences for each of the 22 autosomes and the two distinct sex chromosomes (X and Y). A small DNA molecule is found within individual mitochondria...

DNA sequences on chromosomes. Fluorescence microscopy can be used to determine where the fluorescent probe is bound to the chromosomes. FISH is often used...

syndrome and the genetic chromosomal abnormalities, such as Down syndrome (chromosome 21), cri du chat syndrome (chromosome 5), Klinefelter syndrome,...

like actual chromosomes, are composed of chromatin and replicate in the nucleus of the cell during cell division. Unlike typical chromosomes, they are composed...

Chromosome instability syndromes are a group of inherited conditions associated with chromosomal instability and breakage. They often lead to an increased...

Ring chromosome 22, also known as ring 22, is a rare chromosomal disorder. Ring chromosomes occur when the ends of a chromosome lose material and fuse...

part of chromosome 16. ATR-16 syndrome affects the blood, development, and brain; symptoms vary based on the specific genes deleted on chromosome 16. Because...

females only had the X chromosome and males had both X and Y chromosomes. She was able to conclude that sex is a chromosomal factor and is determined...

and 2n=80 chromosome counts detected in different populations. All four forms are found in Australia, the 40‑chromosome and 78‑chromosome forms are also...

– February 25, 1975) was an American geneticist known for his work on chromosome behavior and non-Mendelian inheritance, particularly in the fungus gnat...

E-M35, also known as E1b1b1-M35, is a human Y-chromosome DNA haplogroup. E-M35 has two basal branches, E-V68 and E-Z827. E-V68 and E-Z827 are primarily...

his first extended play (EP), Lose Control. In 2020, Zhang founded the Chromosome Entertainment Group. Zhang's acting credits include films and television...

Mosaic loss of chromosome Y (mLOY) also known as loss of chromosome Y (LOY), is the phenomenon where the Y chromosome is lost from a subset of cells in...

humans via the mitochondrial DNA pathway. Likewise, Y chromosome is present as a single sex chromosome in the male individual and is passed on to male descendants...

in Drosophila by which genes on the X chromosome in male flies become twice as active as genes on the X chromosome in female flies. In Drosophila, there...

Y-chromosome. Y-STRs are often used in forensics, paternity, and genealogical DNA testing. Y-STRs are taken specifically from the male Y chromosome. These...

is a part of the cell cycle in eukaryotic cells in which replicated chromosomes are separated into two new nuclei. Cell division by mitosis is an equational...

Polycomb-group (PcG) proteins act antagonistically and interact with chromosomal elements, termed Cellular Memory Modules (CMMs). Trithorax-group (trxG)...

Haplogroup G (M201) is a human Y-chromosome haplogroup. It is one of two branches of the parent haplogroup GHIJK, the other being HIJK. G-M201 is widely...

the discovery of large chromosomal DNA repeats and the elucidation of their role in the organization and structure of chromosomes in metaphase and interphase...

process that produces gametes with half the number of chromosomes of the parent cell. Besides chromosomes, the spindle apparatus is composed of hundreds of...

undifferentiated zygote. Females typically have two X chromosomes, and males typically have a Y chromosome and an X chromosome. At an early stage in embryonic development...

Genetic Legacy of Paleolithic *** sapiens sapiens in Extant Europeans: A Y Chromosome Perspective" (PDF). Science. 290 (5494): 1155–9. Bibcode:2000Sci...290...

chromosomes. In contrast, male placental mammals, including chromosomally stable male cats, have one X and one Y chromosome. Since the Y chromosome does...

Chromosome 15q duplication is a large and heterogeneous group of rare genetic disorders in which there is an extra, 3rd (duplicated) copy of a segment...

was an American cancer researcher and co-discoverer of the Philadelphia chromosome. This discovery was the first association between a genetic abnormality...

In genetics, eukaryotic chromosome fine structure refers to the structure of sequences for the chromosomes of eukaryotic organisms. Some fine sequences...

prokaryotic cell that contains all or most of the genetic material. The chromosome of a typical prokaryote is circular, and its length is very large compared...

inheritance is a mode of inheritance in which a mutation in a gene on the X chromosome causes the phenotype to be always expressed in males (who are necessarily...

disomy (UPD) occurs when a person receives two copies of a chromosome, or of part of a chromosome, from one parent and no copy from the other. UPD can be...

Dup15q syndrome is the common name for maternally inherited chromosome 15q11.2-q13.1 duplication syndrome. This is a genomic copy number variant that leads...

human chromosome 1. In a common situation a human cell has one pair of identical chromosomes on chromosome 1. With the 1q21.1 CNVs one chromosome of the...

species have conserved the X chromosome from their primordial X chromosome of a common ancestor. Mammalian X chromosomes in various species, including...

intra-genomic chromosome pairing at meiosis Chromosome pairing during meiosis is a significant challenge for polyploids. Homoeologous chromosomes with similar...

rare genetic disorder caused by a loss of function of specific genes on chromosome 15. In babies, symptoms include weak muscles, poor feeding, and slow development...

were recognized before J-M267 itself was recognized, for example J-M62 Y Chromosome Consortium "YCC" 2002. With one notable exception, J-P58, most of these...

mutation in a single gene (monogenic) or multiple genes (polygenic) or by a chromosome abnormality. Although polygenic disorders are the most common, the term...

singular chromosomes rather than the pairs of chromosomes. It can be all the chromosomes from one of the parents or a minor part of a chromosome, for example...

conditions affecting the reproductive system, in which development of chromosomal, gonadal, or anatomical sex is atypical. DSDs are subdivided into groups...

Female sperm can refer to either: A sperm which contains an X chromosome, produced in the usual way in the testicles, referring to the occurrence of such...

of the attached-X chromosome and an entirely new pattern of inheritance in Drosophila in 1921. She later described a ring-X chromosome in Drosophila melanogaster...

9p syndrome) is a rare chromosomal disorder characterized by the presence of two extra copies of the short arm of chromosome 9 (called the p arm), in...

condensed chromosomes. It is the most common chromosome banding method. It is useful for identifying genetic diseases (mainly chromosomal abnormalities)...

or chromosome abnormalities, EIFs are considered normal changes, or variants. Researchers have noted an association between an EIF and a chromosome problem...

(November 2, 1970). "Chromosome errors in men with antisocial behavior. Comparison of selected men with Klinefelter's syndrome and XYY chromosome pattern". JAMA...

Chimeraplasty Chromomere Chromosomal crossover Chromosomal deletion Chromosome Chromosome banding Chromosome painting Chromosome region p Chromosome region q Classical...

with artificial chromosome construction. The classic strategy to construct an artificial chromosome is bacterial artificial chromosome (BAC). Basically...

a non-reciprocal exchange of genetic code between the chromosomes, in contrast to chromosomal crossover, because genetic information is lost. In genetic...

better solutions. Each candidate solution has a set of properties (its chromosomes or genotype) which can be mutated and altered; traditionally, solutions...

also known as F-M89 and previously as Haplogroup FT, is a very common Y-chromosome haplogroup. The clade and its subclades constitute over 95% of paternal...

DNA and Y-chromosome DNA, respectively. Mitochondrial DNA ("mtDNA") and Y-chromosome DNA differ from the DNA of diploid nuclear chromosomes in that they...

the identical copies (chromatids) formed by the DNA replication of a chromosome, with both copies joined together by a common centromere. In other words...

prophase I during meiosis, the specialized cell division that reduces chromosome number by half to produce haploid gametes. It follows the zygotene stage...

species of orchid. The diploid chromosome number of C. dowiana has been determined as 2n = 40; the haploid chromosome number has been determined as n = 20...

Haplogroup E-M96 is a human Y-chromosome DNA haplogroup. It is one of the two main branches of the older and ancestral haplogroup DE, the other main branch...

glucose or secreting insulin, or abnormal expression of the 6q24 region on chromosome 6. Most permanent neonatal diabetes cases are caused by variations in...

of each chromosome in the nucleus but the 'genome' refers to only one copy of each chromosome. Some eukaryotes have distinctive sex chromosomes, such as...

experience on chromosomes 7, 11, 12, and 15. The variants on chromosomes 11 and 15 were specific to men, with the variant on chromosome 11 located in...

June 1858 – 28 April 1942) was a German cytologist who discovered the X chromosome in 1890 or 1891. The work was the result of a study in Leipzig of the...

chromosomal abnormality where the entire long arms of two different chromosomes become fused to each other. It is the most common form of chromosomal...

constrictions are the constricted or the narrow region found at any point of the chromosome other than that of centromere (primary constriction). The difference between...

known as DNA testing, is used to identify changes in DNA sequence or chromosome structure. Genetic testing can also include measuring the results of genetic...

haplotyping is a technique for the physical separation of individual chromosomes from a metaphase cell followed by direct resolution of the haplotype...

microdeletion syndrome characterized by an abnormality in the short (p) arm of chromosome 17. It has features including intellectual disability, facial abnormalities...

aberration of chromosome 1. A human cell has one pair of identical chromosomes on chromosome 1. With the 1q21.1 deletion syndrome, one chromosome of the pair...

humans. These differences are caused by the effects of the different sex chromosome complement in males and females, and differential exposure to gonadal...

autosomal imprinting and X chromosome inactivation. With contemporaries that included Mary Lyon FRS (who discovered X chromosome inactivation), Bruce’s research...

Haplogroup C is a major Y-chromosome haplogroup, defined by UEPs M130/RPS4Y711, P184, P255, and P260, which are all SNP mutations. It is one of two primary...

Lanka, India, Nepal, Bangladesh, China, Myanmar, Thailand, and Vietnam. Chromosome numbers of 2n = 14 is reported from India and Myanmar. Wikimedia Commons...

Haplogroup R, or R-M207, is a Y-chromosome DNA haplogroup. It is both numerous and widespread among modern populations. Some descendant subclades have...

the same chromosome. MEP representation is not specific (multiple representations have been tested). In the simplest variant, MEP chromosomes are linear...

Haplogroup E-M329, also known as E1b1a2, is a human Y-chromosome DNA haplogroup. E-M329 is mostly found in East Africa. Trombetta et al. (2011) suggested...

linkage is the tendency of DNA sequences that are close together on a chromosome to be inherited together during the meiosis phase of sexual reproduction...

genetic drift, whose effect might be particularly amplified on the X chromosome.", However, other research has suggested instead that Tunisians exhibit...

mode of genetic inheritance by which a dominant gene is carried on the X chromosome. As an inheritance pattern, it is less common than the X-linked recessive...

that affect a single base pair, or large mutations that affect entire chromosomes and are divided into two classes, spontaneous mutations and induced mutations...

mitochondrial DNA haplogroups Human Y-chromosome DNA haplogroups Mitochondrial Eve Y-chromosomal Adam Y-chromosome haplogroups in populations of the world...

(corresponding to chromosome 4 in other muntjacs) to form an expanded "neo-X". The other chromosome 4 fused with the short arm of chromosome 1 to form the...

Haplogroup I (M170) is a Y-chromosome DNA haplogroup. It is a subgroup of haplogroup IJ, which itself is a derivative of the haplogroup IJK. Subclades...

Haplogroup R1, or R-M173, is a Y-chromosome DNA haplogroup. A primary subclade of Haplogroup R (R-M207), it is defined by the SNP M173. The other primary...

X chromosome, two long non-coding RNAs are produced: Tsix is produced by one X chromosome, and Xist is produced by all of the other X chromosomes. Tsix...

disciplines, molecular biology and cytogenetics, and involves the analysis of chromosome structure to help distinguish normal and cancer-causing cells. Human cytogenetics...

small piece of chromosome 2 in which one or more of 3 sub-bands, 2q37.1, 2q37.2, and 2q37.3, of the last band of one of the chromosome 2’s long arms are...

structure of the chromosomes, which decondense and form lateral loops giving them a lampbrush appearance (see Lampbrush chromosome). Oocyte maturation...

than females, because the genes for the relevant opsins are on the X chromosome. Screening for congenital red–green color blindness is typically performed...

C20orf202 (chromosome 20 open reading frame 202) is a protein that in humans is encoded by the C20orf202 gene. In humans, this gene encodes for a nuclear...

a sex chromosome anomaly in which males have two extra chromosomes, one X and one Y chromosome. Human cells usually contain two sex chromosomes, one from...

sexually and asexually. Most male mammals, including male humans, have a Y chromosome, which codes for the production of larger amounts of testosterone to develop...

The Y Chromosome Haplotype Reference Database (YHRD) is an open-access, annotated collection of population samples typed for Y chromosomal sequence variants...

synteny describes the physical co-localization of genetic loci on the same chromosome within an individual or species. In genomics, synteny more commonly refers...

and the X chromosome was published in January 2022, making it the first fully sequenced human genome. The full sequence of the Y chromosome was only published...

of chromosomes disrupting meiosis. Living equids show wide variation in the number of chromosomes, ranging from a diploid number of 32 chromosomes in...

can add to the risk of developing lung cancer. There are regions on chromosomes which are highly susceptible to mutation and, if present, increase the...

with the presence of only one chromosome (instead of the typical two in humans) from a pair, which affects chromosome 14. Fetuses with monosomy 14 are...

in humans associated with sex chromosome aneuploidy and mosaicism of the Y chromosome. It is a fairly rare chromosomal disorder at birth, with an estimated...

syndrome, is a genetic disorder resulting from defective and duplicated chromosomes which result in holoprosencephaly, polydactyly, facial malformations...

of C. stigma. The chromosomes (karyotype) of Chilocorus stigma vary from one individual to another, in both the number of chromosomes (aneuploidy) and...

Chromosome 17p13.1 deletion syndrome is a phenotype in humans that is designed DEL17P13.1. "Entrez Gene: Chromosome 17p13.1 deletion syndrome". Carvalho...

species of orchid. The diploid chromosome number of C. harrisoniana has been determined as 2n = 40. The haploid chromosome number of C. harrisoniana has...

or Poly-X Klinefelter, is a chromosomal disorder in which a female has four, rather than two, copies of the X chromosome. It is associated with intellectual...

polymorphisms, polymorphic Alu insertions, mitochondrial DNA (mtDNA), and Y chromosome data. The results indicate that ancestors of the Mayas made a finite number...

the time. The Neolithic Y-chromosome bottleneck refers to a period around 5000 BC when the diversity in the male y-chromosome dropped precipitously across...

known as 49,XXXYY, is a chromosomal disorder in which a male has three copies of the X chromosome and two copies of the Y chromosome. XXXYY syndrome is exceptionally...

Kohanim and Levi'im help will come to all Israel." A 2003 study of the Y-chromosome by Behar et al. pointed to multiple origins for Ashkenazi Levites, who...

loss of brain-derived neurotrophic factor (BDNF) a gene that is also on chromosome 11. The condition, first described by Miller et al. in 1964 in its association...

idiomere, is one of the serially aligned beads or granules of a eukaryotic chromosome, resulting from local coiling of a continuous DNA thread. Chromomeres...

Haplogroup K or K-M9 is a genetic lineage within human Y-chromosome DNA haplogroup. A sublineage of haplogroup IJK, K-M9, and its descendant clades represent...

two copies of chromosome 18. The deletion involves the distal section of 18q and typically extends to the tip of the long arm of chromosome 18. Distal 18q-...

no longer had access to their GeneTree DNA results. GeneTree offered Y chromosome DNA testing (males only) that gives information about paternal ancestry...

the X chromosome of the placental mammals that acts as a major effector of the X-inactivation process. It is a component of the Xic – X-chromosome inactivation...

bivalent is one pair of chromosomes (homologous chromosomes) in a tetrad. A tetrad is the association of a pair of homologous chromosomes (4 sister chromatids)...

Haplogroup E-V38, also known as E1b1a-V38, is a major human Y-chromosome DNA haplogroup. E-V38 is primarily distributed in Africa. E-V38 has two basal...

The tables below provide statistics on the human Y-chromosome DNA haplogroups most commonly found among ethnolinguistic groups and populations from East...

complex of DNA and protein responsible for condensing and packaging chromosomal DNA. Chromatin is found in both bacterial and eukaryotic cells. Eukaryotic...

list of genetic disorders and if known, type of mutation and for the chromosome involved. Although the parlance "disease-causing gene" is common, it is...

dehydrogenase 10 is an enzyme that in humans is encoded by the RDH10 gene on chromosome 8. RDH10 is a membrane-bound NAD+-dependent retinol dehydrogenase which...

Haplogroup P also known as P-PF5850 or K2b2 is a Y-chromosome DNA haplogroup in human genetics, it forms a clade within Haplogroup K2b (K-P331). Its sister...

involving the microduplication of band 11.2 on the short arm of human chromosome 17 (17p11.2). The duplication was first described as a case study in 1996...

Haplogroup E-V68, also known as E1b1b1a, is a major human Y-chromosome DNA haplogroup found in North Africa, the Horn of Africa, Western Asia and Europe...

treated animals is an indication of induced chromosome damage. Micronuclei were first used to quantify chromosomal damage by H.J. Evans et al., in root tips...

usually have the diploid chromosome number. Depending on the mechanism involved in restoring the diploid number of chromosomes, parthenogenetic offspring...

chromosome. Considering the fact that once one X chromosome is inactivated in a cell, all other cells derived from it will have the same X chromosome...

substance that causes a daughter cell to have an abnormal number of chromosomes or aneuploidy. A substance's aneugenicity reflects its ability to induce...

genetics in Lund, Sweden. He is best known for his pioneering work on chromosome changes in cancer. He is a member of the Royal Swedish Academy of Sciences...

mechanisms of sex determination and dosage compensation—that balance X-chromosome gene expression between the sexes in Caenorhabditis elegans that continue...

humans, is encoded by the HIKESHI gene. HIKESHI is found on chromosome 11 in humans and chromosome 7 in mice. Similar sequences (orthologs) are found in most...

born 1965) is a Japanese molecular biologist whose work centers on how chromosomes are organized, copied and regulated. He is a professor at, and director...

loses in chromosome 3 or chromosome 13; 2) a translocation between the TGFBR3 gene located in band 22.1 on the short (or "p") arm of chromosome 1 and the...

for FERM Domain Containing 4B, a scaffolding protein. It is found at chromosome 3p14.1. "Human PubMed Reference:". National Center for Biotechnology Information...

condition once popularly termed the 'royal disease.' The sex-linked X-chromosome bleeding disorder manifests almost exclusively in males, even though the...

Angraecum sesquipedale. The diploid chromosome number of C. percivaliana has been determined as 2n = 40. The haploid chromosome number has been determined as...

Chromosome combing (also known as molecular combing or DNA combing) is a technique used to produce an array of uniformly stretched DNA that is then highly...

sub-compartments. At the largest scale, entire chromosomes segregate into distinct regions called chromosome territories. Chromosome organization is dynamically-maintained...

American zoologist best known for his work on the structure and function of chromosomes, especially the sex-determination genes X and Y in humans. He was the...

have tumor cells that contain complex chromosome and/or gene abnormalities including ring chromosomes (i.e. chromosome whose ends are fused together to form...

Paraguay, Argentina and Brazil. Its diploid chromosome number has been determined as 2n = 40; its haploid chromosome number has been determined as n = 20. Kew...

2016) was a cancer researcher and co-discoverer of the Philadelphia chromosome. At the time of his death, he was the Gaylord P. and Mary Louise Harnwell...

is the study of chromosomes and chromosome abnormalities. While cytogenetics historically relied on microscopy to analyze chromosomes, new molecular technologies...

noted that around half of the children with AS have a small piece of chromosome 15 missing. In 1992, the AS foundation was created to further research...

(or A1) is a human Y-chromosome DNA haplogroup representing one of the earliest paternal lineages in the modern human Y-chromosome phylogeny. It emerged...

are chromosomal regions crucial for the formation of the nucleolus. In humans, the NORs are located on the short arms of the acrocentric chromosomes 13...

best-studied Gram-positive bacterium and a model organism to study bacterial chromosome replication and cell differentiation. It is one of the bacterial champions...

A chromosomal fragile site is a specific heritable point on a chromosome that tends to form a gap or constriction and may tend to break when the cell is...

C6orf47 is a gene. In humans, it is on chromosome 6. In humans, Chromosome 6 open reading frame 47, C6ORF47, is a single exon gene that spans 2481 nucleotides...

of the two copies of chromosome 18. This deletion involves the proximal (near the centromere) section of the long arm of chromosome 18 somewhere between...

meiosis that prevents the separation of the duplicated chromosomes (anaphase) until each chromosome is properly attached to the spindle. To achieve proper...

a variety of recessively inherited mutations in the XK gene on the X chromosome. The gene is responsible for producing the Kx protein, a secondary supportive...

human chromosome nomenclature, which includes band names, symbols, and abbreviated terms used in the description of human chromosome and chromosome abnormalities...

chromosomes apart, attach during cell division to pull sister chromatids apart. The kinetochore assembles on the centromere and links the chromosome to...

CXorf49 is a protein, which in humans is encoded by the gene chromosome X open reading frame 49(CXorf49). The CXorf49 gene has one alias CXorf49B. The...

mutation or deletion in the CREBBP gene, located on chromosome 16, and/or the EP300 gene, located on chromosome 22. This condition is sometimes inherited as...

correlation between the location of segmental duplications and regions of chromosomal instability. This correlation suggests that they may be mediators of...

A minichromosome is a small chromatin-like structure resembling a chromosome that contains centromeres, telomeres, and replication origins, but relatively...

myeloproliferative neoplasm associated with a characteristic chromosomal translocation called the Philadelphia chromosome. CML is largely treated with targeted drugs called...

the genetic disorders specific to Arabs are located on HLA segment on chromosome 6. These same segment mutations are also markers of Arabs in genealogical...

E-Z827, also known as E1b1b1b, is a major human Y-chromosome DNA haplogroup. It is the parent lineage to the E-Z830 and E-V257 subclades, and defines their...

all of the cell's genome. Nuclear DNA is often organized into multiple chromosomes – long strands of DNA dotted with various proteins, such as histones...

prophase I during meiosis, the specialized cell division that reduces the chromosome number by half to produce haploid gametes. It follows the Leptotene stage...

for ancestry testing. An autosome is one of the 22 chromosomes other than the X or Y chromosomes. They are transmitted from all ancestors in recent generations...

as Cattleya wagneri. The diploid chromosome number of C. mossiae has been determined as 2n = 40. The haploid chromosome number has been determined as n = 20...

Sobralia bimaculata is a species of Sobralia. Chromosome count is 2n = 44 Plants are found growing in Colombia (Antioquia) and Ecuador (Azuay) at elevations...

Partial monosomy of chromosome 13q is a monosomy that results from the loss of all or part of the long arm of chromosome 13 in human beings. It is a rare...

metaphase-anaphase transition and anaphase onset. Following bi-orientation of chromosome pairs and inactivation of the spindle checkpoint system, the underlying...

A microchromosome is a chromosome defined for its relatively small size. They are typical components of the karyotype of birds, some reptiles, fish, amphibians...

determination generally occurs by the presence or absence of a Y chromosome in the 23rd pair of chromosomes in the human genome. Phenotypic sex refers to an individual's...

series of chromosome conformation capture technologies, including but not limited to 3C (chromosome conformation capture), 4C (chromosome conformation...

on the short (or "p") arm of chromosome 7. Studies using next-generation sequencing targeted to the EGFR gene chromosomal area and confirmed by Sanger...

results from the formation of small supernumerary ring chromosome, i.e. an extra ring-shaped chromosome that contains a merger between the COL1A1 and PDGFB...

Listed here are the human Y-chromosome DNA haplogroups found in various ethnic groups and populations from North Africa and the Sahel (Tuaregs). Samples...

genetic disorder caused by a deletion of a small section of material on chromosome 8. It is named after the two doctors who undertook the main research into...

Y-chromosome DNA (Y-DNA) is paternally inherited enables patrilines and agnatic kinships of men to be traced through genetic analysis. Y-chromosomal Adam...

by sex chromosomes. XX individuals are female, XY individuals are male. The Y chromosome is larger than the X chromosome, and the sex chromosomes are the...

types originated in the subcontinent. Conclusions of studies based on Y chromosome variation and autosomal DNA variation have been varied. The genetic makeup...

Haplogroup IJK is a human Y-chromosome DNA haplogroup. IJK is a primary branch of the macrohaplogroup HIJK. Its direct descendants are haplogroup IJ and...

Haplogroup M, AKA M-P256 and Haplogroup K2b1b (previously K2b1d) is a Y-chromosome DNA haplogroup. M-P256 is a descendant haplogroup of Haplogroup K2b1,...

Paraplegin is a protein that in humans is encoded by the SPG7 gene located on chromosome 16. The SPG7 gene contains 21 exons and encodes for a protein that is...

one of their two chromosomes 13. This results in a loss of one of the two RB1 genes (located at band 14.2 on the q arm of this chromosome) as well as one...

chromosome 2. There are nine other major chromosomal differences between chimpanzees and humans: chromosome segment inversions on human chromosomes 1...

the presence of an extra chromosome. The extra chromosome belonged to the E group of chromosomes which consisted of chromosomes 16, 17 and 18. The condition...

native to the Russian Far East, Manchuria, and the Korean Peninsula. Its chromosome number is 2n = 56. "Carex xiphium". Plants of the World Online. Board...

responsible for maleness and male fertility to another chromosome, which he refers to as "the Adonis chromosome", engendering fertile males with an XX karyotype...

testis-determining gene Sry from the Y chromosome, and inserting Sry onto chromosome 3. Therefore the sex chromosomes no longer determine the type of gonad...

nucleic acid (PNA) oligonucleotides to quantify target sequences in chromosomal DNA using fluorescent microscopy and analysis software. Q-FISH is most...

Chromosoma Chromosomal triplication Chromosome Chromosome 1 Chromosome 1 ring Chromosome 1, 1p36 deletion syndrome Chromosome 1, deletion q21 q25 Chromosome 1...

Premature chromosome condensation (PCC), also known as premature mitosis, occurs in eukaryotic organisms when mitotic cells fuse with interphase cells...

or PARs are homologous sequences of nucleotides found within the sex chromosomes of species with an XY or ZW mechanism of sex determination. The pseudoautosomal...

Frontotemporal dementia and parkinsonism linked to chromosome 17 (FTDP-17) is an autosomal dominant neurodegenerative tauopathy and Parkinson plus syndrome...

known for his work on plant chromosomes and chromosome evolution. He was among the first researchers to demonstrate chromosomal translocations in plants...

be fused into one single chromosome by successive end-to-end chromosome fusions and centromere deletions. The single-chromosome and wild-type yeast cells...

Caribbean and Gulf Coast region. It is also found in India. It has a chromosome count of 2n=14. "Oxalis dehradunensis". Tropicos. Media related to Oxalis...

of orchid found in Brazil. Chromosome numbers of several C. bicolor individuals have been determined, finding chromosome numbers of both 2n = 40 and...

focuses on the evolution of sex chromosomes, including dosage compensation of X-linked genes and degeneration of Y chromosomes, using comparative and functional...

rugby league XXXX Gold Beach Cricket XXXX syndrome, Tetrasomy X, a chromosomal disorder XXXX Island, temporary promotional name given to Pumpkin Island...

Hfr cell mates with an F− cell, the chromosome acts as a rolling circle transferring a part of its genomic chromosome across a conjugation bridge. The origin...

base haploid count of 7 chromosomes. Fragaria viridis is diploid, having 2 pairs of these chromosomes for a total of 14 chromosomes. Fragaria viridis is...

studies. Another study found out that the majority of J-M267 (Eu10) chromosomes in the Maghreb are due to the recent gene flow caused by the Arab migrations...

share common Y-chromosome lines with the Lu clan. Therefore, the haplogroup C2b1a1b1-F1756 may be another candidate for the true Y-chromosome lineage of Genghis...

determined by whether the sperm cell contains an X or Y chromosome. If the sperm cell contains an X chromosome, the fetus will be XX and, typically, a girl will...

(acentricity) of molecules Acentric chromosome, in genetics, a chromosome without centromere Acentric fragment, in genetics, a chromosome segment lacking a centromere...

the postnatal changes of typical chromosomal male (46, XY) puberty, and excessive androgen effects in typical chromosomal females (46, XX). It is also the...

would need to inherit two affected X chromosomes to be affected, whereas a man would only need one X chromosome affected. It is possible for a new mutation...

Haplogroup DE is a human Y-chromosome DNA haplogroup. It is defined by the single nucleotide polymorphism (SNP) mutations, or UEPs, M1(YAP), M145(P205)...

McClintock studied chromosomes and how they change during reproduction in maize. She developed the technique for visualizing maize chromosomes and used microscopic...

simplest karyotype possible, that being a single chromosome in haploid males. Females have two chromosomes (one pair). "Myrmecia croslandi Taylor, 1991"...

points in the chromosome, so replication forks meet and terminate at many points in the chromosome. Because eukaryotes have linear chromosomes, DNA replication...

the ERICH5 gene, also known as chromosome 8 open reading frame 47 (C8orf47). The ERICH5 gene is located on human chromosome 8 at 8q22.2 and spans 29 kb on...

prophase I during meiosis, the specialized cell division that reduces the chromosome number by half to produce haploid gametes in sexually reproducing organisms...

the presence of four copies, instead of the normal two, of a particular chromosome. Full tetrasomy of an individual occurs due to non-disjunction when the...

people are those born with any of several sex characteristics, including chromosome patterns, gonads, or genitals that, according to the Office of the United...

groups and populations from West Asia, Egypt and South Caucasus by human Y-chromosome DNA haplogroups based on relevant studies. The samples are taken from...

paternal chromosome. In general, imprinted genes are clustered together on chromosomes, suggesting the imprinting mechanism acts upon local chromosome domains...

Chromosome 17 open reading frame 67 is a protein that in humans is encoded by the C17orf67 gene. GRCh38: Ensembl release 89: ENSG00000214226 – Ensembl...

(dosage-sensitive sex reversal, adrenal hypoplasia critical region, on chromosome X, gene 1) is a nuclear receptor protein that in humans is encoded by...

whose loci are on different but homologous chromosomes (random orientation of pairs of homologous chromosomes in meiosis I); & (2) intrachromosomal recombination...

genealogical DNA tests: autosomal (atDNA), mitochondrial (mtDNA), and Y-chromosome (Y-DNA). Autosomal testing, which looks at the largest sets of genes within...

of chromosome behavior in yeast. Many of her discoveries have concerned telomerase, the RNA-containing enzyme that completes the ends of chromosomes. She...

before they open). The haploid chromosome number of E. nocturnum has been determined as n = 20. The diploid chromosome number has been determined both...

Haplogroup R-M269 is the sub-clade of human Y-chromosome haplogroup R1b that is defined by the SNP marker M269. According to ISOGG 2020 it is phylogenetically...

due to the presence of an extra and abnormal chromosome termed a small supernumerary marker chromosome (sSMC). sSMCs contain copies of genetic material...

database containing fully annotated, fully zoomable and fully searchable chromosome maps from more than 2500 prokaryotic (archaebacterial and eubacterial)...

as a fraction or percentage. Specifically, it is the fraction of all chromosomes in the population that carry that allele over the total population or...

noncoding DNA. Changes in chromosome number may involve even larger mutations, where segments of the DNA within chromosomes break and then rearrange....

high-resolution imaging of live mouse oocytes has revealed that chromosomes form an intermediate chromosomal configuration, called the prometaphase belt, which occurs...

Chromosome 19 open reading frame 47 is a protein that in humans is encoded by the C19orf47 gene. Aliases include Chromosome 19 Open Reading Frame 47,...

are found in Northern Pacific Ocean and Northern Atlantic Ocean. Two chromosome-level genome assembly of Chirolophis japonicus were published in 2026...

mapping describes the methods used to identify the location of a gene on a chromosome and the distances between genes. Gene mapping can also describe the distances...

dioecious plant Melandrium album helped establish that the presence of a Y chromosome determines male sex in the species. Westergaard was born in Denmark on...

more chromosomes. A chromosome consists of a single, very long DNA helix on which thousands of genes are encoded. The region of the chromosome at which...

the case of mtDNA, or from father to son in the case of the Y-chromosome. X-chromosome markers are another tool that can be used for genetic identity...

in the sarcosine dehydrogenase (SARDH) gene, which is located at human chromosome 9q34. The disease is inherited in an autosomal recessive manner, which...

mechanisms that cells employ to fold chromosomes, and how chromosome folding contributes to gene regulation and chromosome segregation. Awarded the Edward...

condensed chromosomes as they move through meiosis and mitosis. Various DNA stains are used to treat cells such that condensing chromosomes can be visualized...

geneticist who first reported Patau chromosome associated with Patau syndrome Patau chromosome, also known as Chromosome 13, associated with Patau syndrome...

they are either located on different chromosomes or are sufficiently distant from each other on the same chromosome. Any recombination frequency greater...

"der" (derivative chromosome) notations indicate, most of the signature chromosomes are derived from multiple original chromosomes. HPV was found to have...

URA3 is a gene on chromosome V in Saccharomyces cerevisiae (yeast). Its systematic name is YEL021W. URA3 is often used in yeast research as a "marker gene"...

TEL-JAK2 is a gene fusion resulting from a chromosomal translocation between chromosomes 9 and 12 observed in human leukemia. The 5' moiety of TEL is...

human chromosomes: human chromosome 1 and mouse chromosome 4 human chromosome 17 and mouse chromosome 11 human chromosome X and mouse chromosome X "Vega...

Haplogroup R2a, or haplogroup R-M124, is a Y-chromosome haplogroup characterized by genetic markers M124, P249, P267, L266, and is mainly found in South...

available for haplogroup L-M20. The scientifically accepted one is the Y-Chromosome Consortium (YCC) one published in Karafet 2008 and subsequently updated...

Ayazi syndrome (or Chromosome 21 Xq21 deletion syndrome) is a syndrome characterized by choroideremia, congenital deafness and obesity. The presentation...

syndrome, also known as 48,XYYY, is a chromosomal disorder in which a male has two extra copies of the Y chromosome. The syndrome is exceptionally rare...

is a rare genetic disorder resulting from the deletion of a segment of chromosome 3. This syndrome was first described in 2005. The clinical phenotype of...

four sisters can do needlework. They all share a recessive mutation on chromosome 17p. Üner Tan of Çukurova University Medical School in Adana, said that...

set of chromosomes combines with another gamete to produce a zygote that develops into an organism composed of cells with two sets of chromosomes (diploid)...

aneuploidy with the presence of only one chromosome from a pair. Partial monosomy occurs when a portion of one chromosome in a pair is missing. Human conditions...

on the chromosome 6p21.3 and chromosome 11p15 respectively. IDDM3, IDDM4, IDDM5 IDDM7 reside in chromosome 15q26, chromosome 11q13, chromosome 6q25 and...

type of chromosome abnormality) A chromosomal translocation (another type of chromosome abnormality) There are 2 different types of chromosomal translocations...

about the Y-chromosomal haplogroup (and therefore patrilineal ancestry) of Genghis Khan. Zerjal et al. (2003) identified a Y-chromosomal lineage haplogroup...

Ellsworth's major works include Preparation for the Obsolescence of the Y Chromosome, TIFPRABAP.ORG, Phone Homer: Clytemnestra's Guide to Surveillance-Free...

Various chromosome abnormalities have been found in the tumor cells of a few LGMS cases. A ring chromosome and/or giant marker chromosome, which commonly...

khrōmat- 'color' + -id) is one half of a duplicated chromosome. Before replication, one chromosome is composed of one DNA molecule. In replication, the...

needed]. A bacterial chromosome contains a single origin, and therefore the whole bacterial chromosome is a replicon. The chromosomes of archaea and eukaryotes...

of the population. It is associated with the HOXD13 gene, located on chromosome 2q31.1. Brachydactyly type D is a skeletal condition that exhibits a “partial...

inheritance could be applied to chromosomes at the cellular level of living organisms. This is now known as the Boveri–Sutton chromosome theory. Sutton was born...

Done (Chromosome Records, 2000) Secret Luminaries (Chromosome Records, 1999) Tinnitus (Animal World Recordings, 2000) Let Your Shadow Out (Chromosome Records...

professor at Arizona State University who studies the evolution of sex chromosomes. Wilson was born in Stillwater, Oklahoma, and lived there until she was...

segment of chromosome are defined as congenic. Similarly, organisms that are coisogenic differ in one locus only and not in the surrounding chromosome. Unlike...

human chromosome disorder. Individuals with diploid-triploid syndrome have some cells with three copies of each chromosome for a total of 69 chromosomes (called...

single sex. The first is the Y chromosome, which is passed from father to son. Anatomical females carry a Y chromosome only rarely, as a result of genetic...

determine which alleles co-occur on chromosomes. In the example, if the two loci are located on the same chromosome the possibilities are either {A-T,G-C}...

University of Newcastle upon Tyne (England) identified a gene (NIPBL) on chromosome 5 that causes CdLS when it is mutated. Since then, additional genes have...

A microdeletion syndrome is a syndrome caused by a chromosomal deletion smaller than 5 million base pairs (5 Mb) spanning several genes that is too small...

kinase ID is a protein in humans that is encoded by the CAMK1D gene on chromosome 10 (locus 10p13). This gene encodes a member of the Ca2+/calmodulin-dependent...

bacteriophages (such as phage λ), cosmids, and bacterial artificial chromosomes (BACs). Some DNA, however, cannot be stably maintained in E. coli, for...

condition caused by a deletion of all or part of the short arm (the p arm) of chromosome 18. It occurs in about 1 of every 50,000 births. Patients typically have...

28 chromosomal pseudomolecules. It has a BUSCO completeness score of 98.7% and contains 22,165 predicted protein-coding genes. A second chromosome-level...

Gene duplication (or chromosomal duplication or gene amplification) is a mechanism through which new genetic material is generated during molecular evolution...

Cattleya lueddemanniana is a labiate Cattleya species of orchid. The diploid chromosome number of C. lueddemanniana has been determined as 2n = 40. taxonomy....

where recessive lethal alleles are present on two homologous chromosomes. Each of the chromosomes in such a pair carries a different lethal allele, which is...

Chromosome 4 open reading frame 17 (C4orf17), is a protein-coding gene in humans. C4orf17 (accession: NP_115525.2) spans approximately 31,289 base pairs...

syndrome, also called triploidy, is a chromosomal disorder in which a fetus has three copies of every chromosome instead of the normal two. If this occurs...

S-M230, also known as S1a1b (and previously as S* or K2b1a4), is a Y-chromosome DNA haplogroup. It is by far the most numerically significant subclade...

a chromosomal abnormality, such as a deletion or duplication that removes several genes lying in close proximity to one another on the chromosome. The...

Involved chromosomes Autosomal – loci are not situated on a sex chromosome Gonosomal – loci are situated on a sex chromosome X-chromosomal – loci are...

Haplogroup E-P2, also known as E1b1, is a human Y-chromosome DNA haplogroup. E-P2 has two basal branches, E-V38 and E-M215. E-P2 had an ancient presence...

rapid life cycle, relatively simple genetics with only four pairs of chromosomes, and large number of offspring per generation. It was originally an African...

Chromosome transmission fidelity protein 18 homolog is a protein that in humans is encoded by the CHTF18 gene. CHTF18 has been shown to interact with:...

encoded by a gene of the same name with four exons that is located on chromosome 1p36.13.,. HSPB7 contains 170 amino acids and has a molecular weight of...

Center for Biotechnology Information, U.S. National Library of Medicine. "Entrez Gene: Chromosome 11 open reading frame 80". Retrieved 2018-01-20. v t e...

technique, they studied the polytene chromosomes and discovered that all the wild populations were polymorphic for chromosomal inversions. All the flies look...

the Y-Chromosome Phylogenetic tree. This led to considerable confusion. In 2002, the major research groups came together and formed the Y-Chromosome Consortium...

humans is encoded by the MEP1A gene. The MEP1A locus is on chromosome 6p in humans and on chromosome 17 in mice. The meprin alpha subunit product of the MEP1A...

ancestry of the population of Greenland. Y-Chromosome DNA (Y-DNA) represents the male lineage, The Norwegian Y-chromosome pool may be summarized as follows where...

disease X chromosome, duplication Xq13 1 q21 1 X chromosome, monosomy Xp22 pter X chromosome, monosomy Xq28 X chromosome, trisomy Xp3 X chromosome, trisomy...

various resolution of genome, particularly for the investigation of chromosomes. The three basic varieties of physical mapping are fluorescent in situ...

The diploid chromosome number of C. warneri has been determined as 2n = 40. page 251 of L. P. Felix and M. Guerra: "Variation in chromosome number and...

plants) have two alleles of most hereditary predispositions because the chromosomes in the cell nucleus are usually present in pairs (diploid). Carriers...

oligozoospermia show microdeletions in the long arm of the Y chromosome and/or chromosomal abnormalities, each with the respective frequency of 9.7% and...

in aligning the chromosomes in the middle of the cell during the metaphase of mitosis. Dynein pulls the microtubules and chromosomes to one end of the...

PMID 12644552. Scherer SW, Cheung J, MacDonald JR, et al. (2003). "Human chromosome 7: DNA sequence and biology". Science. 300 (5620): 767–72. Bibcode:2003Sci...

Cytotaxonomy is the classification of organisms using comparative studies of chromosomes during meosis. Cytotaxonomy is a branch of taxonomy that uses the characteristics...

The Mitelman Database of Chromosome Aberrations and Gene Fusions in Cancer is a free-access database devoted to chromosomes, genes, and cancer. It was...

Research related to Down syndrome focuses on the genes located on chromosome 21. In general, this leads to an overexpression of the genes. Understanding...

Muton is a term in genetics that means the smallest unit in a chromosome that can be changed by mutations. The term Muton was created by Seymour Benzer...

facilitate chromosome migration and alignment. BubR1 promotes mitotic fidelity and protects against aneuploidy by ensuring proper chromosome segregation...

haploid count of 7 chromosomes. Fragaria × bringhurstii is pentaploid, having 5 pairs of these chromosomes for a total of 35 chromosomes, 7 from the F. vesca...

arachnodactyly, which is caused by mutation in the gene encoding fibrillin-2 on chromosome 5q23. It remains unconfirmed whether Russian composer and pianist Sergei...

Chromosome 19 open reading frame 33 is a protein that in humans is encoded by the C19orf33 gene. The protein encoded by this gene has been shown to be...

D-CTS3946. This broad lineage of the male-specific portion of the human Y chromosome is found primarily in East Asia, Magar-ethnic Nepal and the Andaman Islands...

Chromosome 21 Open Reading Frame 58 (C21orf58) is a protein that in humans is encoded by the C21orf58 gene. The gene is located on the minus strand of...

The following articles are lists of human Y-chromosome DNA haplogroups found in populations around the world. Y-DNA haplogroups by ethnic group Y-DNA haplogroups...

programming language Deletion (genetics), a mutation where part of a chromosome is left out during DNA replication Elision or deletion in linguistics...

enzyme that in humans is encoded by the HDAC11 gene on chromosome 3 in humans and chromosome 6 in mice. It is the only Class IV HDAC since it is not...

Neolithic culture of the Levant. Keita (2008) examined a published Y-chromosome dataset on Afro-Asiatic populations and found that a key lineage E-M35/E-M78...

classic physical findings, but diepoxybutane chromosome fragility assay, showing increased chromosomal breaks, can make the diagnosis. About 80% of FA...

Oceania (Pacific Islands and Australia) and East Indonesia by human Y-chromosome DNA haplogroups based on relevant studies. Oceania Languages of Oceania...

Haplogroup C-M217, also known as C2 (and previously as C3), is a Y-chromosome DNA haplogroup. It is the most frequently occurring branch of the wider Haplogroup...

their Y chromosome. R-Z18, also called R-Z19, is defined to be mutation in which the nucleotide at position 14,991,735 along the Y chromosome that has...

containing HEGs as template. Both chromosomes will contain the HEGs after repair. B-chromosomes are nonessential chromosomes; not homologous with any member...

and Jack and Laurie's mutual friend. Blindsight (1992) Contagion (1995) Chromosome 6 (1997) Vector (1999) Marker (2005) Crisis (2006) Critical (2008) Foreign...

are causative: COMP (chromosome 19), COL9A1 (chromosome 6), COL9A2 (chromosome 1), COL9A3 (chromosome 20), and MATN3 (chromosome 2). However, in approximately...

normal and aberrant chromosomes and chromosomal subregions directly in the cell nucleus and provided direct evidence for chromosome territories (CTs)....

1998). "Organization and evolution of olfactory receptor genes on human chromosome 11". Genomics. 53 (1): 56–68. doi:10.1006/geno.1998.5422. PMID 9787077...

Chromosome alignment-maintaining phosphoprotein 1 (CHAMP1), also known as zinc finger protein 828 (ZNF828), is a protein that in humans is encoded by the...

Haplogroup B (M60) is a human Y-chromosome DNA haplogroup common to paternal lineages in The Arabian Peninsula. It is a primary branch of the haplogroup...