What do the new ‘gay gen’ tell about sexual orientatn? | New Scientist

Contents:

• THERE IS NO ‘GAY GENE.’ THERE IS NO ‘STRAIGHT GENE.’ SEXUALY IS JT PLEX, STUDY NFIRMS
• SEARCH FOR 'GAY GEN' COM UP SHORT IN LARGE NEW STUDY
• WHY ARE PEOPLE GAY? GAY BY CHOICE OR IS BEG GAY GEIC?
• NEW STUDY FDS GEICS INFLUENCE LGBTQ SEXUALY, BUT STILL NO 'GAY GENE'
• IS BEG GAY GEIC?
• 'GAY GEN': SCIENCE IS ON THE RIGHT TRACK, WE'RE BORN THIS WAY. LET’S AL WH .
• GAY GEICSMOST OF BELIEVE THAT WE WERE BORN THAT WAY, BUT IS SEXUAL ORIENTATN OUR DNA? JV CHAMARY GO SEARCH OF THE GAY GENEJV CHAMARYPUBLISHED: MAY 31, 2009 AT 11:00 PMGAY GEICS
• THERE’S (STILL) NO GAY GENE
• NO ‘GAY GENE’: MASSIVE STUDY HOM ON GEIC BASIS OF HUMAN SEXUALY
• WHAT DO THE NEW ‘GAY GEN’ TELL ABOUT SEXUAL ORIENTATN?

THERE IS NO ‘GAY GENE.’ THERE IS NO ‘STRAIGHT GENE.’ SEXUALY IS JT PLEX, STUDY NFIRMS

The study of nearly a half ln people clos the door on the bate around the existence of a so-lled “gay gene.

It is worth keepg md that this study only vers some typ of sexualy — gay, lbian and cis-straight — but don’t offer many sights to genr inty. Humans have tried to unrstand human sexualy for centuri — and geics rearchers joed the ay the early 1990s after a seri of studi on tws suggted homosexualy ran fai. “As a teenager tryg to unrstand myself and unrstand my sexualy, I looked at the ter for “the gay gene” and obvly me across Xq28, ” said Fah Sathirapongsasuti, a study -thor and senr scientist at 23andMe, which he joked once led him to believe he hered his gayns om his mother.

SEARCH FOR 'GAY GEN' COM UP SHORT IN LARGE NEW STUDY

“We worried a lot about volunteer bias, ” said Bailey, whose rearch clus a wily publicized study on Xq28 and gay brothers om 2018.

Sanrs llaborated wh Bailey on those earlier studi and said their work had always admted that there was no sgle “gay gene. The rearchers had members of the same-sex muny review the study’s sign and language, and they adm that their termology and fns for gay, lbian and heterosexual do not reflect the full nature of the sexualy ntuum.

WHY ARE PEOPLE GAY? GAY BY CHOICE OR IS BEG GAY GEIC?

“[Our study] unrsr an important role for the environment shapg human sexual behavr and perhaps most importantly there is no sgle gay gene but rather the ntributn of many small geic effects sttered across the genome, ” Neale said. In an terview, she said the study is further evince that prev reports of a "gay gene" on the X chromosome are wrong.

And bee the rearchers didn't fd gene variants that rrelated wh a gradient of sexual behavr, she says, unrcuts Aled Ksey's s-old sle, which ranked people on a spectm of sexualy, om exclively heterosexual to exclively homosexual. Those who nsir beg gay a disadvantage life (which still is, certa societi), might regard gay people differently if they knew that beg gay was an hered tra, rather than a nsequence of life events, such as a particular type of upbrgg, or mixg wh certa sorts of iends or even a liberate cisn. The law also might take a different view those untri (aga, there are still many) which beg gay is a crimal offense.

An early study claimed that if one pair of (male) intil tws (who have intil geic patterns) was gay, there was a 100 percent chance of the other one also beg gay. It was quickly shown that, fact, the real chance of two intil tws beg gay was around 40-50 percent, whereas was ls non-intil on, though still somewhat greater than the general populatn. There was another, much smaller, group who said they were entirely gay (about 6 percent), and a stterg of even smaller numbers who claimed to be bisexual.

NEW STUDY FDS GEICS INFLUENCE LGBTQ SEXUALY, BUT STILL NO 'GAY GENE'

Firstly, they found very few gen whose variatns were rrelated wh beg gay, or even havg a sgle same-sex partner. In theory, humans and other animals who are exclively attracted to others of the same sex should be unlikely to produce many blogil children, so any gen that predispose people to homosexualy would rarely be passed on to future generatns. Yet same-sex attractn is wispread humans, and rearch suggts that is partly a study of data om hundreds of thoands of people, rearchers have now intified geic patterns that uld be associated wh homosexual behavur, and showed how the might also help people to fd different-sex mat, and reproduce.

IS BEG GAY GEIC?

The thors say their fdgs, published on 23 Augt Nature Human Behavur1, uld help to expla why gen that predispose people to homosexualy ntue to be passed down. None of the variatns seemed to greatly affect sexual behavur on s own, backg up prev rearch that has found no sign of a ‘gay gene’. Most of the participants were born durg a time when homosexualy was eher illegal or culturally taboo their untri, so many people who were attracted to others of the same sex might never have actually acted on their attractn, and uld therefore have end up the wrong group the Monk, an elogist and evolutnary blogist at Yale Universy New Haven, Connecticut, thks that the veats are so important that the paper n’t draw any real nclns about geics and sexual orientatn.

Instead, he thks the rearchers have found geic markers associated wh openns to new experienc, which uld expla the overlap between people who have had a homosexual partner and heterosexual people who have had many partners. And he adms that g a sgle homosexual experience as an ditn of sexual orientatn isn’t ial, but says that the UK Bbank didn’t provi data on attractn. However, blogists have documented homosexual behavr more than 450 speci, argug that same-sex behavr is not an unnatural choice, and may fact play a val role wh populatns.

The 2019 study is the latt a hunt for “gay gen” that began 1993, when Dean Hamer lked male homosexualy to a sectn of the X chromosome. As the ease and affordabily of genome sequencg creased, addnal gene ndidat have emerged wh potential lks to homosexual behavr. So-lled genome-wi associatn studi intified a gene lled SLITRK6, which is active a bra regn lled the diencephalon that differs size between people who are homosexual or heterosexual.

'GAY GEN': SCIENCE IS ON THE RIGHT TRACK, WE'RE BORN THIS WAY. LET’S AL WH .

Gay uncl and nts, for example, are “helpers the nt” that help raise other fay members’ children to nurture the fay tree.

” For example, certa gen women help crease their fertily, but if the gen are exprsed a male, they predispose him toward homosexualy. While there is no sgle “gay gene, ” there is overwhelmg evince of a blogil basis for sexual orientatn that is programmed to the bra before birth based on a mix of geics and prenatal ndns, none of which the fet choos.

Estimat as to the number of gay people the populatn range om 1--20 to 1--10, so why are some people gay? In other words, 5-10% of people experience same-sex sexual attractn or behavr; of urse, this don't speak to what mak people gay. Morn science is workg to show that geics is one of the of beg gay, although some science nflicts this area.

GAY GEICSMOST OF BELIEVE THAT WE WERE BORN THAT WAY, BUT IS SEXUAL ORIENTATN OUR DNA? JV CHAMARY GO SEARCH OF THE GAY GENEJV CHAMARYPUBLISHED: MAY 31, 2009 AT 11:00 PMGAY GEICS

Study of fay history reveals that homosexual men have more homosexuals their fay tree than do heterosexuals. While psychologil factors may crease the likelihood that someone is gay, no sgle factor is known to e homosexualy.

It very much appears that same-sex sexual attractn is not a choice but actg on is; so if you fe gay as the mere prence of same-sex attractn, then om everythg we unrstand, beg gay is not a choice. If, on the other hand, you nsir someone to be gay only if they act on their same-sex attractn then beg gay n be nsired a choice pendg on an dividual's behavr.

Whether science n ultimately prove the blogy of beg gay or not, 's important to support all adults their choic no matter how they intify. CHICAGO (AP) The largt study of s kd found new evince that gen ntribute to same-sex sexual behavr, but echo rearch that says there are no specific gen that make people gay. Importantly, most participants were asked about equency of same-sex sexual behavr but not if they self-intified as gay or lbian.

THERE’S (STILL) NO GAY GENE

”Former Natnal Instut of Health geicist Dean Hamer said the study nfirms “that sexualy is plex and there are a lot of gen volved, ” but isn’t really about gay people. Mexi’s third genr sheds light on the blogil rrelat of sexual orientatn Cred: Gary John Norman Getty ImagThe reasons behd why people are gay, straight or bisexual have long been a source of public fascatn. Intertgly, Wtern society, homosexual men, pared wh heterosexual men, tend to rell higher levels of separatn anxiety—the distrs rultg om beg separated om major attachment figur, such as one’s primary regiver or close fay members.

Mux showed elevated rat of childhood separatn anxiety when pared wh heterosexual men, siar to what has been seen gay men Canada and fa’afafe Samoa. The moral acceptabily of homosexualy has often hged on the ia that same-sex sir are nate and immutable and therefore not a choice.

This is clear when we thk about how prev beliefs around homosexualy beg learned were once ed to jtify now discreded attempts to change the sir.

NO ‘GAY GENE’: MASSIVE STUDY HOM ON GEIC BASIS OF HUMAN SEXUALY

The cross-cultural siari evced by the Lethbridge study offer further evince that beg gay is geic, which is, self, an tertg fdg. The etlogy of homosexualy, blogil or otherwise, should have no bearg on gay dividuals’ right to you a scientist who specializ nroscience, gnive science, or psychology? So, the next time you’re a nversatn and someone says beg gay is geic, here are three thgs to remember:.

WHAT DO THE NEW ‘GAY GEN’ TELL ABOUT SEXUAL ORIENTATN?

In a recent Guardian article, Simon Copland argued that is very unlikely people are born gay (or prumably any other sexual orientatn). Fdg evince for a blogil basis should not sre or unrme gay, lbian and bisexual (LGB) rights (the studi I refer to do not clu transgenred dividuals, so I’ll nfe my ments to lbian, gay and bisexual people).

Evince om pennt rearch groups who studied tws shows that geic factors expla about 25-30% of the differenc between people sexual orientatn (heterosexual, gay, lbian, and bisexual). Tw studi are a first look to the geics of a tra and tell that there are such thgs as “gen for sexual orientatn” (I hate the phrase “gay gene”). Three gene fdg studi showed that gay brothers share geic markers on the X chromosome; the most recent study also found shared markers on chromosome 8.

Perhaps this is due to the stereotype that female sexualy is “too plex” or that lbians are rarer than gay are far om the whole story. Gen uld themselv nudge one towards a particular sexual orientatn or gen may simply teract wh other environmental factors (such as sex hormon the womb environment) to fluence later sexual bras of gay and heterosexual people also appear to be anised differently.