Why not? Just because it hasn't been proven that being gay or not is genetically based, doesn't mean it isn't a possibility.
I reckon that whether an individual is gay or not may be based on either genetics or lifestyle influences. Things like this can be caused by a bit of both.
I'm pretty damn certain that there's no such thing as a gay, lesbian, etc. gene. It isn't genetics. What happens in your life will affect your sexuality. I could keep going on and on about this but i'd rather not. We've totally derailed this thread.
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