hardheadjarhead
Senior Master
5-0 Kenpo said:My use of the term "gay gene" was meant to mean a genetic basis of homosexuality, whatever it's form. And the term has been used in this thread before. There are only two (or three depending on your perspective) and they are genetics or environmental (spiritualism being the other one). If noone is born a homosexual, then it is a caused by the environment, which would mean homosexuality is a mutation or a choice.
There is likely no single "gay gene." The genetic etiology for homosexuality (where it exists) is most certainly polygenic.
Environmental influences consist of social conditioning (which I suggest is far less profound than other influences, given the homophobia in our society); pre-natal hormonal fluctuations that impact fetal neural development; pre-natal toxins that imact fetal neural development (aspirin, phthalates and hexachlorobenzene to name three); and post-natal chemical influences on infant/child neural development.
In addition there is a hypothesis that a mother's immune response to fetal testosterone might skew sexual orientation. Researchers noted that younger brothers with older brothers show significantly greater rates of homsexuality than those younger brothers who have no older brothers (only sisters). It is posited that in certain instances the mother's anti-body response to the first male fetus's androgens cause feminization of subsequent male children.
It should be noted that studies on rats have shown a dramatic amount of induced homosexuality in rats whose pre-natal hormones were tampered with.
The idea of one simply choosing to be homosexual is a little too simplistic, and suggests that every one here on this board is by default bisexual. That means that some of the most strident anti-gay marriage males here on MT could take passionate delight in giving oral sex to a man...all they have to do is make up their mind to do it.
In spite of claims to the contrary by some on the right, the evidence for a biological etiology for homosexuality is increasing. Funding for research in sexuality has always been difficult, regardless of the nature of the studies...but the data keeps piling up.
NOTE: Homosexuality would indeed be passed down via a genetic link if the genes involved are passed down through the mother. This would not effect human production and the trait would not be "bred out" of existence. Strong evidence of this link to matrilineal lines was found by Angela Pattatucci and Dean Hamer in their research at the National Institutes of Health, published in 1993.
Regards,
Steve