Evolution would have "selected out" homosexuality in a couple of generations through natural selection, nothing genetic about it imo. Also, I don't believe in evolution, this arguement is for those that do!
DWR
You don't believe in natural selection? Had any roach problems lately?
Not necessarily. It could be the effect of having two copies of a recessive gene.
Think of sickle-cell. If you have two sickle-cell genes, you get anemia. But if you just have one, your're resistant to malaria.
So it's **possible** that the "gay gene" is recessive, does something good in heterozygotes, and makes homozygotes more likely to be gay (or to respond that way to environmental influences).