The science ties sexual orientation to gender, the sense of being masculine or feminine.
Namely, gay men are shifted towards the feminine: "what's striking is the large number of traits in which gay people's minds are at least part-way shifted in gender-atypical direction" according to Simon Le Vay, a neuroscientist whose own research on sexual orientation is often invoked by the "born that way" side.
As a child, the Urning manifests an entirely unmistakable inclination toward girls' occupations, toward the company of girls, toward playing with girls' toys, especially dolls.
How terribly lamentable to such a child that it is not the custom for boys to play with dolls, that Santa Claus will not bring him any dolls, too, and that he is forbidden to play with his sister's dolls!
One exception to the lack of interest in the details of what exactly gays are born with was a 60 Minutes piece in 2006 on the "Science Of Sexual Orientation." Intrepid reporter Leslie Stahl profiled two sets of identical twins to illustrate the overlap of sexual orientation and gendered traits. But why is Leslie Stahl bothering small children whose gender and interests don't conform to societal expectations?