Homosexuality is nothing new. Ever heard of the sodomites mentioned in the Old Testament?
It is behavior - pure and simple. Pure genetic driven homosexuality doesn’t exist.
Now, could there be a biologic, post-conception cause for some homosexuality? Possible but rare.
I believe, however, that a biologic cause is not the case for the majority of homosexuals or bisexuals today. Practicing psychologists and psychiatrists say that sex is 98% in the brain: IMHO, that is more likely what is driving the homosexual culture craze today.
It has become a subconcious lifestyle choice.
In the prior scenario, people had strong incentives to suppress homosexual displays simply because the punishments for such behaviour was death or something as violent. In that sort of a climate, a homosexual would more than likely marry a heterosexual, AND indulge in homosexuality outside this marriage. This presents a good means for homosexuality genes, if ever present, to be transmitted.
Pure genetic-driven homosexuality doesnt exist.
Do you have proof? I recall reading about hormones the mother produces during late pregnancy, affecting the sexual orientation of the offspring.
Again, someone on comment #10 mentioned a mode of genetic transmission. Until we can rule out all of these, none of us can have either the arrogance, or the confidence, to say that homosexuality is purely behavioural.