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Skip to content. For them, the discovery of how an individual becomes gay is likely to shed light on Discover the gay of… sexuality-related genes build brains, how people of any persuasion are attracted to each other, and perhaps even how homosexuality evolved.

In the second, one twin is gay, and the other is straight. Publication of the largest-ever study of the roles of genes in homosexual behavior is fanning the debate over whether being gay is due to genes or environment.

But the man with the generous sample size hopes to answer that question too. My Science Shop Einstein's Universe. Whether or not a gay gene, a set of Discover the gay of… genes, or some other biological mechanism is ever found, one thing is clear: The environment a child grows up in has nothing to do with what makes most gay men gay.

Then the researchers performed two separate analyses. But if some poor woman has 14 sons, the 15th would have a 50 percent chance of being gay. An even Discover the gay of… sample size could help to identify those missing variants, he says.

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Updated August 30, at pm. Michael Bailey conducted a study in to find out if gay uncles treat their nephews and nieces any better than straight uncles treat theirs. Discover the gay of… has been a lot of sociological research on same-sex sexual behaviours, he says, but this is an incredibly complicated topic.

Some gay rights activists insist that homosexuality is genetic, hoping that proof from that domain will lead to greater acceptance. There are many other traits that are not always the same in identical twins, however, like eye color and fingerprints.

From the Nature Index Paid Content. A much higher proportion of the 23andMe sample — about 19 percent compared to about 3 percent of the Biobank sample — reported a same-sex sexual experience, a difference possibly related to cultural factors or because the specific 23andMe sexual orientation survey might attract more L.

By Tina Hesman Saey August 29, at pm.

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  • For them, the discovery of how an individual becomes gay is likely to shed light on how sexuality-related genes build brains, how people of any. A little while ago someone asked me when I'd discovered I was gay. Had I always been a lesbian or had I realised it and, if so, how did that.
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