Much of his research has focused on embryogenesis in the fruit fly Drosophila melanogaster, specifically in the patterning that occurs in the early Drosophila embryo. Most of the gene products used by the embryo at these stages are already present in the unfertilized egg and were produced by maternal transcription during oogenesis. A small number of gene products, however, are supplied by transcription in the embryo itself. He has focused on these "zygotically" active genes because he believes the temporal and spatial pattern of their transcription may provide the triggers controlling the normal sequence of embryonic development. Saturation of all the possible mutations on each chromosome by random events to test embryonic lethality was done by Eric Wieschaus.[3] This body of science eventually was termed the Heidelberg screen.[2][4]
^St Johnston, D. (2002). "The art and design of genetic screens: Drosophila melanogaster". Nature Reviews. Genetics. 3 (3): 176–88. doi:10.1038/nrg751. PMID11972155. S2CID6093235.
^Gruenbaum, J. (1996), "[Nobel prize winners in medicine—1995]", Harefuah, vol. 130, no. 11 (published June 2, 1996), pp. 746–748, PMID8794677
^Blum, H. E. (1995), "[The 1995 Nobel Prize for medicine]", Dtsch. Med. Wochenschr., vol. 120, no. 51–52 (published December 22, 1995), pp. 1797–800, doi:10.1055/s-0029-1234219, PMID8549267, S2CID260117108
^Molven, A. (1995), "1995 Nobel Prize in physiology and medicine. The mystery of fetal development", Tidsskr. Nor. Laegeforen., vol. 115, no. 30 (published December 10, 1995), pp. 3712–3, PMID8539733
Eric F. Wieschaus on Nobelprize.org including the Nobel Lecture on December 8, 1995 From Molecular Patterns to Morphogenesis: The Lessons from Drosophila