I saw this great article posted over at Kottke. Here’s a snippet:
For the transgender community, born in the wrong body is the catchphrase that best captures this moment. It implies that the anatomy deceives where the brain tells the truth; that gender destiny is set before a baby takes its first breath. But the empirical evidence does not fit this argument so neatly. Milton Diamond says his study of identical transgender twins shows the same genetic predisposition that has been found for homosexuality: if one twin has switched to the opposite sex, there is a 50 percent chance that the other will as well. But his survey has not yet been published, and no one else has found nearly that degree of correlation. Eric Vilain, a geneticist at UCLA who specializes in sexual development and sex differences in the brain, says the studies on twins are mixed and that, on the whole, “there is no evidence of a biological influence on transsexualism yet.”
Read the Atlantic article here.