Have to say, I personally lend some credence to the claims in that department. While I hardly think it's flawless logic, I do think there is a high possibility that the sexuality of at least
some people is influenced by their upbringing. And in turn, I think having an overbearing mother/absent father (as was very much my own situation, with the addition of a douchebag step-dad, and step-mother who made more effort to raise me than my dad did) could contribute to the development of homosexual tendencies.
But, I don't think it'd
turn anyone gay or anything. I just think that in certain areas, women are far more acceptant of homosexuality than men are, and I personally think that a mother is far more likely to pass on acceptance to her child than a father would be (less so in this day and age, but again it would also depend on their upbringing. My step-father for instance might as well have been raised on a farm in the 1960's considering how his views developed).
And if that acceptance is passed onto a child, I think it leaves them more open to exploring their sexuality, and not feeling ashamed by it. Thereby, making the realization far earlier than they would have naturally, or possibly just making them more open to the idea of same-sex relations as a possibility than they would have been otherwise. Obviously, some people are just wired a certain way, and no amount of nurturing can change their nature - but I do think Freud was at least onto something, if that
was one of his concepts...
...his ideas about penis envy in women were a tad far-fetched though