Why Are There Gay Men? | Male Homosexualy | Live Science

Contents:

• SCIENTISTS MAY HAVE FALLY UNLOCKED PUZZLE OF WHY PEOPLE ARE GAY
• ARE MORY MEN MORE LIKELY TO BE GAY? WHY?
• WHY ARE THERE GAY MEN?
• ALL STEREOTYP ARE TE, EXCEPT ... V: 'ALL EXTREMELY HANDSOME MEN ARE GAY'

SCIENTISTS MAY HAVE FALLY UNLOCKED PUZZLE OF WHY PEOPLE ARE GAY

Scientists may have fally solved the puzzle of what mak a person gay, and how is passed om parents to their children. A group of scientists suggted Tuday that homosexuals get that tra om their oppose-sex parents: A lbian will almost always get the tra om her father, while a gay man will get the tra om his heredary lk of homosexualy has long been tablished, but scientists knew was not a strictly geic lk, bee there are many pairs of intil tws who have differg sexuali.

Scientists om the Natnal Instute for Mathematil and Blogil Synthis say homosexualy seems to have an epigeic, not a geic thought to have some sort of heredary lk, a group of scientists suggted Tuday that homosexualy is lked to epi-marks — extra layers of rmatn that ntrol how certa gen are exprsed. In homosexuals, the epi-marks aren't erased — they're passed om father-to-dghter or mother-to-son, explas William Rice, an evolutnary blogist at the Universy of California Santa Barbara and lead thor of the study. "There is pellg evince that epi-marks ntribute to both the siary and dissiary of fay members, and n therefore feasibly ntribute to the observed faial herance of homosexualy and s low nrdance between [intil] tws, " Rice and his team created a mathematil mol that explas why homosexualy is passed through epi-marks, not geics.

Evolutnarily speakg, if homosexualy was solely a geic tra, scientists would expect the tra to eventually disappear bee homosexuals wouldn't be expected to reproduce.

ARE MORY MEN MORE LIKELY TO BE GAY? WHY?

But bee the epi-marks provi an evolutnary advantage for the parents of homosexuals: They protect fathers of homosexuals om unrexposure to ttosterone and mothers of homosexuals om overexposure to ttosterone while they are gtatn. "The epi-marks protect fathers and mothers om excs or unrexposure to ttosterone — when they rry over to oppose-sex offsprg, n e the masculizatn of femal or the femizatn of mal, " Rice says, which n lead to a child beg gay.

Rice not that the markers are "highly variable" and that only strong epi-marks will rult a homosexual scientists have long spected some sort of geic lk, Rice says studi attemptg to expla why people are gay have been few and far between. Well there are many exampl of homosexualy nature, 's very mon.

" Homosexual behavr has been observed black swans, pengus, sheep, and other animals, he 's mol still needs to be tted on real-life parent-offsprg pairs, but he says this epigeic lk mak more sense than any other explanatn, and that his team has mapped out a way for other scientists to tt their work. The view that sexual inty may change might be ed to support therapy geared towards "nvertg" homosexuals to heterosexuals, an approach which was outlawed recently California (for mors), legislatn that is likely to spread. Belief that "homosexualy is a psychologil or moral choice, " PT blogger Michael LaSala dit, is wrong and reprehensible.

WHY ARE THERE GAY MEN?

So rults of new rearch on orientatn self-intifitn — “the largt sgle study of the distributn of the lbian, gay, bisexual, and transgenr (LGBT) populatn the U. On rerd, ” which Gallup asked more than 120, 000 Amerins if they personally intified as lbian, gay, bisexual or transgenr — reviewed the New York Tim by opn lumnist Charl Blow, are bafflg. For example, Hispanics and Ain-Amerins have been far more opposed to gay marriage than wh are.

It shows that the gay and lbian muny is more diverse than many believe, and shows that many young men of lor feel empowered to intify as they feel most fortable. Blow asks, "Could be that some men of lor have ls at stake fancially that uld be jeopardized by intifyg as gay than their whe unterparts? While female sexualy appears to be more fluid, rearch suggts that male gayns is an born, unalterable, strongly geilly fluenced tra.

But nsirg that the tra disurag the type of sex that leads to procreatn — that is, sex wh women — and would therefore seem to thwart s own chanc of beg geilly passed on to the next generatn, why are there gay men at all? Put differently, why haven't gay man gen driven themselv extct? For several years, studi led by Andrea Camper Ciani at the Universy of Padova Italy and others have found that mothers and maternal nts of gay men tend to have signifintly more offsprg than the maternal relativ of straight men.

ALL STEREOTYP ARE TE, EXCEPT ... V: 'ALL EXTREMELY HANDSOME MEN ARE GAY'

The rults show strong support for the "balancg selectn hypothis, " which is fast beg the accepted theory of the geic basis of male theory holds that the same geic factors that duce gayns mal also promote fecundy (high reproductive succs) those mal' female maternal relativ. Through this tra-off, the maternal relativ' "gay man gen, " though they aren't exprsed as such, tend to get passed to future generatns spe of their tenncy to make their male herors no one knows which gen, exactly, the might be, at least one of them appears to be loted on the X chromosome, acrdg to geic molg by Camper Ciani and his lleagu. Mal her only one X chromosome — the one om their mother — and if clus the gene that promot gayns mal and fecundy femal, he is likely to be gay while his mom and her female relativ are likely to have lots of kids.