Gay gene in fruit flies
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While several studies find homosexuality in humans and other animals is biological rather than learned, a question remains over whether it's a hard-wired phenomenon or one that can be altered. A new study finds drugs or genetic manipulation can turn the homosexual behavior of fruit flies on and off within a matter of hours. While the genetic finding supports the thinking that homosexuality is hard-wired, the drug finding surprisingly suggests it's not that simple. In fact, homosexuality in the fruit flies seems to be regulated by how they interpret the scent of another.
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Scientists Discover Evolutionary Advantage For Homosexuality
SEARCH FOR A GAY GENE - TIME
The sex habits of mice have long been an intriguing subject for scientists. Now, mouse sex just got a lot more interesting for the rest of us. A group of Korean geneticists has altered the sexual preferences of female mice by removing a single gene linked to reproductive behavior. Without the gene, the mice gravitated toward mice of the same sex. Those mice who retained the gene, called FucM, were attracted to male mice. FucM is short for fucose mutarotase.
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Using Fruit Flies to Personalize Cancer Treatment
According to a new study in fruit flies, not only does same-sex sexual behavior seem to be heritable, but females with a genetic makeup associated with this trait actually display higher reproductive rates, which is an evolutionary advantage. These fascinating findings have been published in Proceedings of the Royal Society B. After all, the aim of the reproductive game is to keep your genes going. Why, then, do members of the same sex cop off with each other in so many species? Scientists have long pondered this and have struggled to come to any consensus.
November 19, Fighting like a girl or fighting like a boy is hardwired into fruit fly neurons, according to a study in the Nov. The findings mark a milestone in an unlikely new animal model for understanding the biology of aggression and how the nervous system gives rise to different behaviors. And no one gets hurt.
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