||Fruit fly Drosophila melanogaster
||Fernald RD. Casting a genetic light on the evolution of eyes. Science. 2006 Sep 29 313(5795):1914-8 DOI: 10.1126/science.1127889 p.1914 middle column bottom paragraphPubMed ID17008522
|| BruinFly, www.bruinfly.ucla.edu
||P.1914 middle column bottom paragraph: "How many genes might it take to make an eye and how many are expressed exclusively in eye development? Two preliminary answers to the first question from Drosophila and mice differ greatly in their estimates. UCLA undergraduates (n = 138) each screened 10 mutant Drosophila for eye defects and identified 501 eye-related genes (primary source) or about 3.5% of the Drosophila genome."