The Scientist Staff | Feb 19, 1989 | 2 min read
William F. Loomis Department of Biology University of California, San Diego La Jolla, Calif. " A mutation found in 1913 to affect the eyes of Drosophila has been shown to be an insertion of a transposable element into an intron of the rough gene. The product of this gene carries a homeodomain and appears to regulate genes in two cells in each ommatidium that are necessary for proper differentiation of adjacent cells. A. Tomlinson, B.E. Kimmel, G.M. Rubin, "rough, a Drosophila homeobox gene