Is there a switch that turns you gay? That's the startling question raised again by a recent experiment in which scientists said they were able to turn on and off homosexual behavior in fruit flies.
Researchers at the University of Illinois at Chicago said they discovered what they call a "gender blind gene," or GB, in male fruit flies. A mutation in this GB gene spurred the males flies to start courting other males, as well as females.
When researchers strengthened neural synapses in the brain, the male flies were attracted, rather than repulsed, by the smell of other male flies.
"We put the males together, and they did to each other what they do when they're interested in a female: They approach her, sing her a song, lick her ... and mount her," researcher David Featherstone told ABCNEWS.com.
"They treated other males exactly the way they would treat other females. We put male flies in a chamber with males and females, and they were attracted to both with equal frequency."
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