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The Washington Post

How our genes could
make us gay or straight

Gay men kiss outside the Nigerian embassy (Image courtesy of Flickr user William Hamon.)

The claim that homosexual men share a “gay gene” created a furor in the 1990s. But new research two decades on supports this claim – and adds another candidate gene.

 

To an evolutionary geneticist, the idea that a person’s genetic makeup affects their mating preference is unsurprising. We see it in the animal world all the time. There are probably many genes that affect human sexual orientation.

 

But rather than thinking of them as “gay genes,” perhaps we should consider them “male-loving genes.” They may be common because these variant genes, in a female, predispose her to mate earlier and more often and to have more children.

 

Likewise, it would be surprising if there were not “female-loving genes” in lesbian women that, in a male, predispose him to mate earlier and have more children.

 

Continue reading at www.washingtonpost.com

Gay men kiss outside the Nigerian embassy (Image courtesy of Flickr user William Hamon.)

To an evolutionary geneticist, the idea that a person’s genetic makeup affects their mating preference is unsurprising.