What is the cause of homosexuality, especially in the human species?
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Homosexuality is normal. Between 2 and 11 percent of human adults report experiencing some homosexual feelings, though the figure varies widely depending on the survey.
Homosexuality exists across cultures and even throughout the animal kingdom, as the authors of a mammoth new review paper on homosexuality write. Between 6 and 10 percent of rams prefer to mount other rams, not ewes. Certain groups of female Japanese monkeys prefer the company of other females:
In certain populations, female Japanese macaques will sometimes choose other females as sexual partners despite the presence of sexually motivated male mates. Female Japanese macaques will even compete intersexually with males for exclusive access to female sexual partners.
Here’s what we don’t know: What, specifically, causes someone to become gay, straight, or something in between. Part of the explanation is genetic, but since most identical twins of gay people are straight, heredity doesn’t explain everything.
Homosexuality exists across cultures and even throughout the animal kingdom, as the authors of a mammoth new review paper on homosexuality write. Between 6 and 10 percent of rams prefer to mount other rams, not ewes. Certain groups of female Japanese monkeys prefer the company of other females:
In certain populations, female Japanese macaques will sometimes choose other females as sexual partners despite the presence of sexually motivated male mates. Female Japanese macaques will even compete intersexually with males for exclusive access to female sexual partners.
Here’s what we don’t know: What, specifically, causes someone to become gay, straight, or something in between. Part of the explanation is genetic, but since most identical twins of gay people are straight, heredity doesn’t explain everything.
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