Sorry but a lot of research done since this study says that this is bull....
Aside from the “Xq28” theory of inheritance of sexual orientation are some about its being controlled by the prenatal intrauterine environment:
...and some about its control by inheritance of a gene on the mother's
In effect, the orientation, I'm convinced, is inherited or at least congenital -- not a chosen "lifestlye".
I know that the question is overused but for those who have not heard it it goes something like this: If you are heterosexual, do you recall precisely when you chose
to be that way? If you have trouble answering , could it possibly be that you were born that way and that is not a matter of choice at all?