![]() ![]() Twin studies are a first look into the genetics of a trait and tell us that there are such things as “genes for sexual orientation” (I hate the phrase “gay gene”). ![]() Evidence from independent research groups who studied twins shows that genetic factors explain about 25-30% of the differences between people in sexual orientation (heterosexual, gay, lesbian, and bisexual). Let’s get some facts and perspective on the issue. I would argue that understanding our fundamental biological nature should make us more vigorous in promoting LGB rights. Finding evidence for a biological basis should not scare us or undermine gay, lesbian and bisexual (LGB) rights (the studies I refer to do not include transgendered individuals, so I’ll confine my comments to lesbian, gay and bisexual people). It points strongly to a biological origin for our sexualities. I n a recent Guardian article, Simon Copland argued that it is very unlikely people are born gay (or presumably any other sexual orientation).
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