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SAN JOSE, Calif. — Compared to straight men, gay men are more likely to be left-handed, to be the younger siblings of older brothers, and to have hair that whorls in a counterclockwise direction.Researchers are finding common biological traits among gay men, feeding a growing consensus that sexual orientation is an inborn combination of genetic and environmental factors that largely decide a person’s sexual attractions before they are born.
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[S]cientists say the political and moral debate over same-sex marriage frequently strayed from established scientific evidence, including comments by vice presidential candidate Sarah Palin that homosexuality is “a choice” and “a decision.”
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“In the past decade, I think the pendulum has swung more toward biological theory and biological causes,” said Richard Lippa, a psychology professor at California State University-Fullerton. Sven Bocklandt, a geneticist at the David Geffen School of Medicine at UCLA, is bewildered by the argument that people choose their sexual attraction. He said that virtually every animal species that has been studied has a small minority of individuals who demonstrate homosexual activity.“I really believe the reason most humans are straight is the same reason that most crocodiles are straight, and the same reason most whales are straight,” Bocklandt said. “Nature would not leave something so important for reproduction, for the survival of the species, to coincidence.”
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Long discredited are theories that parenting — one mid-20th century theory held that boys raised by a domineering mother with a distant father were more likely to be gay — has anything to do with sexual orientation.
1 comment:
A small step in the right direction.
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