The gay gene

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They may be common because these variant genes, in a female, predispose her to mate earlier and more often, and to have more children. This has unleashed a new flurry of comment. Furthermore, the SCN of homosexual males is extremely large both the volume and the number of neurons are twice as many as in heterosexual males. In a study population composed of more than participants, Ellis et al. InGanna et al. In this way, our gender identity the conviction of belonging to the male or female gender and sexual orientation are programmed or organized into our brain structures when we are still in the womb. The inactivation of the X chromosome occurs randomly throughout the embryo, resulting in cells that are mosaic with respect to which chromosome is active.

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Sexual differentiation Autism Narcissism Schizophrenia Stroke care.

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Born this way? An evolutionary view of ‘gay genes’

The New York Times. A study suggests linkage between a mother's genetic make-up and homosexuality of her sons. There have also been reports of variations in brain structure corresponding to sexual orientation. Simon LeVaytoo, conducted some of these early researches. Female relatives of the homosexual men on their mother's side tended to have more offspring than those on the father's side.

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The search was two-pronged. It had been presumed that the overactive TSHR hormone lowered body weight in gay people. Steiner eds Clinical management of gender identity disorders in children and adults. But why such a furore when we know of gay gene variants in species from flies to mammals? In interviews to the press, researchers have pointed that the evidence of genetic influences should not be equated with genetic determinism.

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