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If genes determine our sexual orientation we would expect that in cases of identical twins where one was gay the other would be gay too - in every case. Cultural expectations dictate that from puberty until their late teens all young boys have sex with an unmarried male warrior as part of their rite of passage to manhood. The authors are right to say that biological factors play a role. The authors have no credible explanation for bisexuality. claiming it barely exists. Other biological determinist models of gayness suggest that same-sex attraction is largely or entirely determined by our genes and hormonal influences in the womb. They document studies showing differences between gay and straight people with respect to a number of physiological traits that are associated with hormonal influences. The presumption seems to be that straightness is normal and therefore does not need explanation. whereas queerdom is a deviation from the norm and this requires investigation and answers.

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If we are all born either gay or straight, how do they explain people who switch in mid-life from fulfilled heterosexuality to fulfilled homosexuality and vice versa. The evidence does not support the idea that sexuality is a fixed biological given. Wilson and Rahman argue the other determinant of sexual orientation is hormonal exposure during pregnancy. Show 25 25 50 All.

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Indeed, the more biological older brothers a man has, the greater his likelihood of being gay. This is convincing stuff, but not entirely so. Forget Freudian theory and all the other psycho-babble. If he was hard-wired at birth to desire men, how can he now desire women. Other biological determinist models of gayness suggest that same-sex attraction is largely or entirely determined by our genes and hormonal influences in the womb. Other factors are also at work.

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Description: Other factors are also at work. The evidence does not support the idea that sexuality is a fixed biological given. Something as complex and pivotal as human emotional and sexual life is bound to evolve from a multiplicity of factors, rather than from any single, simple origin. These exceptions lead me to conclude that while genes and hormones may, like male birth order, predispose a person to a particular sexual orientation, they do not determine it. The authors are right to say that biological factors play a role. They document studies showing differences between gay and straight people with respect to a number of physiological traits that are associated with hormonal influences. Just because I don't personally fit his theory doesn't automatically invalidate it. The latest theory of why gays are gay suggests that birth order influences male sexual orientation. If he was hard-wired at birth to desire men, how can he now desire women.
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