When gay gene research began

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By Natasha Gilbert Feb. The perceived causes of sexual orientation have a significant bearing on the status of sexual minorities in the eyes of social conservatives. They conjure up the specter of the surgical or chemical "rewiring" of gay people, or of abortions of fetal homosexuals who have been hunted down in the womb. They think Neuroligin 4 Y-linked protein is responsible for a later son being gay. Is There a Role for Epigenetics? Technology Review PDF magazine archive, including articles, images, and covers dating back to

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Powering the new social genetics are huge databases, including the British government—funded UK Biobank and the DNA of millions of customers collected by 23andMe, a consumer gene testing company.

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Biology and sexual orientation

AI and robotics are changing the future of work. Sexual practices that significantly reduce the frequency of heterosexual intercourse also significantly decrease the chances of successful reproduction, and for this reason, they would appear to be maladaptive in an evolutionary context following a simple Darwinian model competition amongst individuals of natural selection—on the assumption that homosexuality would reduce this frequency. A study, Garcia-Falgueras and Swaab asserted that "the fetal brain develops during the intrauterine period in the male direction through a direct action of testosterone on the developing nerve cells, or in the female direction through the absence of this hormone surge. Unlimited online access including all articles, multimedia, and more. However, this difference was not hypothesized a priori, was not large, and was the only group difference found out of many tested.

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Twin studies have received a number of criticisms including self-selection bias where homosexuals with gay siblings are more likely to volunteer for studies. Female relatives of the homosexual men tended to have more offspring than those of the heterosexual men. Published August 14, Rewriting Life Genes linked to being gay may help straight people get more sex. Sex differences in humans. Subscribe now for unlimited access to online articles.

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