Editors' ChoiceGENETICS

Fly Sexual Dimorphism

STKE  17 Jun 2003:
Vol. 2003, Issue 187, pp. tw232-TW232
DOI: 10.1126/stke.2003.187.tw232

In a comparative microarray analysis, Ranz et al. have discovered that sex determines how genes are expressed in two closely related species of fruit fly. For example, males of Drosophila melanogaster have up-regulated olfactory functions, whereas males of D. simulans have up-regulated visual functions, hinting at the evolution of differences in mating behavior. Furthermore, male-biased and female-biased genes have specific chromosomal locations, which suggests that gene location may be functionally more important than expected.

J. M. Ranz, C. I. Castillo-Davis, C. D. Meiklejohn, D. L. Hartl, Sex-dependent gene expression and evolution of the Drosophila transcriptome. Science 300, 1742-1745 (2003). [Abstract] [Full Text]