Why does gay people exist

Scientists may have finally solved the puzzle of what makes a person gay, and how it is passed from parents to their children. A group of scientists suggested Tuesday that why does gay get that. Why are there homosexuals? At first glance, it’s a silly, even offensive question—some people are people exist, and you’ll just have to deal with it. But for biologists, it’s a real puzzle.

How, after all, could evolution create people genetically predisposed not to breed (at least, not without third-party assistance)?. Homosexuality is romantic attraction, sexual attraction, or sexual behavior between people of the same sex or gender. [1][2][3] As a sexual orientation, homosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" exclusively to people of the same sex or gender.

{INSERTKEYS} [4][failed verification] It also denotes identity based. In the last two decades, dozens of scientific papers have been published on the biological origins of homosexuality - another announcement was made last week. It's becoming scientific. Put differently, why haven't gay man genes driven themselves extinct? This longstanding question is finally being answered by new and ongoing research.

Vasey believes that his Samoan result was different because the men he studied there were different. Link copied. Andrew Barron , Macquarie University. Brothers of a different kind - identical twins - also pose a tricky question. We conclude from this study that same-sex sexual behaviour in both males and females evolved as species shifted from solitary living to sociality. Andrea Camperio-Ciani, at the University of Padova in Italy, found that maternal female relatives of gay men have more children than maternal female relatives of straight men.

The Scientist AUG. A better explanation for the evidence is that same-sex sexual behaviour was rare in mammalian ancestors overall, but evolved independently many times in many different families. By William Kremer. Our hypothesis for the evolution of homosexuality would predict this kind of variation in human sexuality, and can help explain why it is generally stable across cultures.

{/INSERTKEYS}

Are people born gay

Listen again to the programme on iPlayer or get the Why Factor podcast. For Qazi Rahman, it's the media that oversimplifies genetic theories of sexuality, with their reports of the discovery of "the gay gene". The largest study of its kind to date estimates that genetics accounts for at most exist of variation in whether or not a person reports engaging in non-heterosexual behaviors.

These benefits are not necessarily the same in different mammal lineages, and may include others that have not yet been investigated. But since gay and lesbian people have fewer children than straight people, a problem arises. Also relevant - although in no way proof - is research identifying physical differences in the brains of adult straight and gay people, and a dizzying array of homosexual behaviour in animals.

In doing do, we acknowledge homosexuality does not present a paradox needing a special explanation. Species exhibiting same-sex sexual behaviour had shared ancestors much more recently than species not showing the behaviour. Psychoneuroendocrinology JAN. We argue many of the evolutionary forces that shaped human sexuality were social, rather than based on reproductive ability.

Federal government websites often end in. Why then is male—male sexual behaviour so common? However, our argument addresses the early evolution of human sexuality, not how relatively doe gay people phenomena like religion and religion-based legal structures exist responded to sexual minorities. Gay people do why children. Link copied.

Behind the headlines Research findings and data from the National Library of Medicine. Exposure to unusual levels of hormone before birth can also affect sexuality. In any case, the ubiquity and frequency of same-sex sexual behaviour in mammals means homosexuality cannot be considered aberrant or maladaptive in humans, or any other species. For example, female foetuses exposed to higher levels of testosterone before birth show higher rates of lesbianism later on.

Recent genetic analyses confirm hundreds of genes influence sexuality in complex ways.