http://www.suntimes.com/lifestyles/health/689002,CST-NWS-flies10.article
A new study is providing insights into the genetics of homosexuality -- at least in fruit flies.
Researchers have discovered a gene involved in homosexual behavior in the tiny flies. They also found a way to turn homosexuality on and off with drugs.
Humans have a similar gene. But it's unclear what effect, if any, the gene has on homosexual behavior in people, said biologist David Featherstone of the University of Illinois at Chicago.