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Definition of Sevenless
1. Noun. (genetics) A gene in ''Drosophila melanogaster'' that encodes a receptor tyrosine kinase protein essential to the development of R7 cells in the embryonic eye. ¹
¹ Source: wiktionary.com
Medical Definition of Sevenless
1. Drosophila gene that is required for development of the R7 cell in each ommatidium in the eye. Gene product is a receptor tyrosine kinase, related to the insulin receptor. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)