Re: How can gayness have a genetic basis?
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As I said in the OP, I find this unsatisfying as an explanation. I can see how an excess of hormones/whatever might make a male less likely to reproduce - I don't see how it could result in gayness. And it leaves female gayness unexplained. The theory seems superficial.
That said, if any data support it it would be interesting to see if the theory did also incorporate female gayness.
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Maybe male homosexuality and female homosexuality are determined by different factors. So where scertain things may lead to a male being gay, it may have no affect upon a womans sexual preference.
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