Being gay and manifesting effeminate mannerism are not synonymous. There are lots of masculine acting gay men and effeminate acting straight men.
Never said it was I said "or"....
If you could guess the population I was talking about. Also, in population where men are constantly around one another, guess what happens? So, there needs to be balance when we are talking about raising boys, not for him to be surrounded by women all the time, and not for him to be always around dudes----ALL THE TIME.
We are also missing the hormonal component as well, I have to find this book, but there were researchers that found out that female rats that had more test in the wombs were far more aggressive, those male rats that had more estrogen in the wombs, were less agresive and exhibited homosexual attributes (having sex with one another). Like anything, balance is the key