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Myself, I’m of the part-genetic, part cultural persuasion.

Rather than argue over the relative contribution of those factors, I’d like to point out that a lot of research has gone into trying to find genes that code for intelligence, with minimal success—it seems to be due to the outcome of the combination of a number of genes.

It isn’t inconceivable that a predisposition to homosexuality might be genetic, although there’s clearly a lot of acculturation going on in most cases (otherwise, why all the promotion?).

I’m of the opinion that gestational conditions contribute.

Myself, I’m of the part-genetic, part cultural persuasion.

This is of course a possibility. But if there were a genetic contribution to homosexuality, why is it not EXTINCT by now? By definition homosexuality reduces the rate at which homosexuals have children.

Yes, homosexuals can and do and have over human history had children. But by definition anyone carrying a homosexual predisposition as a gene would have LOWER rates of reproduction than heterosexuals.

That's by definition. That's why the activists can't wrap their head around. Homosexuality, by definition and by its nature, results in a reduced frequency of children. No, not zero. But at a distinctly lower frequency than heterosexuals.

So you have the unavoidable result that any genetic basis for homosexuality would already be extinct by now. (We have historical references going back at least 3,000 years. So 3,000 years is enough time for extinction of the gene.)

I’d like to point out that a lot of research has gone into trying to find genes that code for intelligence, with minimal success—it seems to be due to the outcome of the combination of a number of genes.

But again you are missing the fact that intelligence is essential for human life. It is part of the standard, original pattern. Without intelligence, there is no human being. So having the genetic basis spread throughout our entire genetic code is reasonable.

By contrast, there must be a CHANGE from the standard of heterosexuality to create a genetic basis for homosexuality. There had to be a genetic mutation at one particular place on Earth in one particular ethnic group at one particular point in time.

It isn’t inconceivable that a predisposition to homosexuality might be genetic, although there’s clearly a lot of acculturation going on in most cases (otherwise, why all the promotion?).

But if there is a genetic predisposition, why isn't the genetic basis extinct already?

That's the problem no one is thinking about.

A genetic predisposition has to BEGIN somewhere in human evolution. It did not just fall out of the clear blue sky.

And the genetic predisposition would have to be passed on to children or it would die out.

Wife an I know a couple who’s son’s homosexuality was apparent to us from an early age. However, the boy’s parents were stunned when he came out to them.

I think your on to something in the combinatorial sense.