Blank: the documentary I sourced is full of scientific evidence and study. And better yet, it is unbiased. They did not set out to prove or disprove a "gay" gene. They wanted to know exactly what happens when someone feels attracted to another person. I see how you could dismiss it though, it doesn't support your kinds beliefs. That's fine though, dismiss it. It does not change facts. We as humans, being a more "evolved" species of animal; are programmed from before birth to find the most suitable mate to pass along our genes. This is practiced by every single animal species in the world, therefore it is the norm and suitable behavior. What is interesting in the study though, is that the subjects chose mates that fit their socially accepted level of attraction...I.e. a 4 with a 4, 10 with 10 ect...this proves that when choosing a mate, environmental influences take place, most dominantly, societies view of what's "beautiful" and what's not.

So it's not a choice, what about trans genders, or bisexuals? After all, bis like a little bit of both in their sexual life. Maybe there is a half gay gene as well?