Does the gay gene exsist

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Washington: There is no one gene that determines a person's sexual orientation, but genetics - along with environment - play a part in shaping sexuality, a massive new study shows. The shadows of people standing behind an LGBT flag. Credit: AP.

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The relationship between biology and sexual orientation is a subject of research. While scientists do not know what determines an individual's sexual orientationthey theorize that it is caused by a complex interplay of genetichormonaland environmental influences. Biological theories for explaining the causes of sexual orientation are favored by scientists.

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Behavioural genetics has always been ahot bed of controversy. Not because the science of the subject is not up to the mark, but often because of the area of the research it conducts. Earlier this month, things changed a bit.

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Home Feedback Links Books. Homosexuality has been practiced for thousands of years. Simply put, homosexuality is defined as sexual relations between like genders i.

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Homosexuality can refer to both attraction or sexual behavior between people of the same sex, or to a sexual orientation. When describing the latter, it refers to enduring sexual and romantic attraction towards those of the same sex, but not necessarily to sexual behavior. Most scientist today agree that sexual orientation is most likely the result of a complex interaction of environmental, cognitive and biological factors.

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Bill Sullivan does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment. In the U. Despite these numbers, many people still consider homosexual behavior to be an anomalous choice.

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There's no such thing as a single "gay gene" that drives a person's sexual behavior, concludes the largest genetic study ever conducted on the issue. Instead, a person's attraction to those of the same sex is shaped by a complex mix of genetic and environmental influencessimilar to what's seen in most other human traitsresearchers report. That's not in anyone's interest.

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We have known for decades that sexual orientation is partly heritable in men, thanks to studies of families in which some people are straight and some people are gay. Both findings were confirmed in a study of gay and straight brothers in For the first time, individual genes have been identified that may influence how sexual orientation develops in boys and men, both in the womb and during life.

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Among those nearlysurveyed, more than 26, reported having a same-sex sexual encounter, marking the largest sample size of queer participants in a genome study of its kind. In case you were curious, that data pool came from participants who consented to a study conducted by 23andMe, a privately held personal genomics and biotechnology company based in Mountain View, Calif. Our findings provide insights into the biological underpinnings of same-sex sexual behavior but also underscore the importance of resisting simplistic conclusions—because the behavioral phenotypes are complex, because our genetic insights are rudimentary, and because there is a long history of misusing genetic results for social purposes.

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The Pride parade in Brighton, UK. The findings, which are published on 29 August in Science and based on the genomes of nearlypeople, shore up the results of earlier, smaller studies and confirm the suspicions of many scientists: while sexual preferences have a genetic component, no single gene has a large effect on sexual behaviours. But she cautions that the results may not be representative of the overall population — a limitation that the study authors acknowledge. The people who contribute their genetic and health information to those databases are predominantly of European ancestry and are on the older side.

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