SCIENTIFICALLY what makes someone homosexual , Heterosexual , or bisexual .?

Question

I am just curios about the subject.

Answer 1

Scientific researchers who specialize in human sexuality have shown that homosexuality is innate and linked to biology and genetics.

An October 2004 scientific research publication stated that scientists at the University of Padua have found that women tend to have more children when they inherit the same genetic factors linked to homosexuality in men. This fertility boost more than compensates for the lack of offspring fathered by gay men, and keeps the “gay” genetic factors in circulation.

A study published in Human Genetics in February 2006 examined X chromosome inactivation in mothers of gay sons and mothers whose sons were not gay. Researchers found extreme differences between women who had gay sons and women who did not.

Another scientific study said that researchers have known for years that a man's likelihood of being gay rises with the number of older biological brothers, but the new study found that the so-called "fraternal birth order effect" persists even if gay men were raised away from their biological families. Anthony F. Bogaert, Ph.D., professor at Brock University, said "The research suggests that the development of sexual orientation is influenced before birth."
The older-brother effect was constant regardless of whether the men were raised with natural, adopted or stepbrothers. It also didn't matter if they weren't raised with their biological mothers. If gay younger brothers and older brothers don't have the same home environments, what do they have in common? "They shared the same uterus, the same womb, the same mother," Bogaert said.

Answer 2

Depends on what you mean by "makes". If you mean what causes someone to have a given sexual preference, there is no solid evidence one way or the other, though there is data that is strongly suggestive. If you mean how are people so defined then that can be done by either their actions or their preferences. Many people argue that you are only gay if you actually engage in homosexual activity. Others define it in terms of what you would prefer to do, whether you act on the preference or not. The first viewpoint allows the argument that homosexuality is a choice, since you can choose to be celibate if you so wish. It also draws no distinction between a mute and a monk under a vow of silence. The second view would argue that if you would overwhelmingly prefer a same sex partner, living a heterosexual lifestyle will not make you straight, only an unfulfilled and frustrated gay person. Personally I hold the second view, but that's just my personal opinion, not a proved scientific fact.

Answer 3

Well, to answer your question, “scientifically” there is nothing that CLEARLY makes someone gay, lesbian, or bisexual, but there is at least proven scientific reason for someone being straight. Now while I have no issues with homosexuality – I will still likely receive chastisements (in the form of thumbs-down I assume) because of stating this fact. Yet, that is exactly what it is... a fact. It has been identified, studied, and proven that *straight* males a have a pre-set, innate attraction to females, just as *straight* females do towards males. It falls along the lines of having to do with hormones, pheromones, the pituitary gland, and a combination of other things, which I am surely not an expert in regards to.

I am sure however that just as homosexual and bisexual people say that they did not *choose* to be gay, that same principle applies to being straight also. Therefore, just as there are scientific identifiers and reasons for someone being straight, there should also exist the same proofs and reasons for someone being gay or bisexual as well. It seems logical that way, right? At least for me it does. There just have not been as many strides in the field of "medical" explanations for homosexuality as opposed to just personal, social, and religious views considering it a blasphemous sin or a simple matter of uncontrolled lust. Nevertheless, it is my hope that time will reveal more on the subject. Cheers!

Answer 4

Currently, we don't know. Most research has led to dead ends as no matter what oddities are identified in homosexuals, they've all been noted in heterosexuals as well.

It's unlike to be genetic as such mutations aren't likely to survive when simply being homosexual near enough prevents one from leaving naturally conceived offspring and passing the odditiy on.

The general concensus is that it's either an exposure to certain hormones while developing in utero, or it is a personality traight that develops naturally though is likely to be "set" at a very young age. Chances are though that they're both incorrect and it's another unseen modifier that defines sexuality.

Answer 5

SCIENTIFICALLY, nothing as there isn't any physiological differences between heterosexuals and homosexuals. It's a mind thing and there isn't a scan or lab test for it. We are all the same. It's called emotions and preference and has nothing to do with science. Something is only scientific if it can be proven objectively and the same results duplicated by other scientists.

Answer 6

As far as scientists have determined, it's a combination of genetics, hormones, pheremone receptors, and chemical makeup in the brain.
Research is still being done on the matter, however, because we haven't pinpointed it exactly.

Disclaimer:
Before some lunatic posts the "being gay is a choice" or "homosexuality is a mental disorder," I'd like to point out that (1) nobody picks out a sexuality at birth (or puberty), and (2) the APA says it's not a disorder. So please, if anyone is going to spout anti-gay BS, don't bother doing it here.

Answer 7

Nobody really knows yet. However, it is probably a combination of factors, both genetic and from the environment you are raised in. From my own experience, I would say I was genetically homosexual but society made me become bisexual.

Answer 8

there is substantial gay play between primates quite, yet there are no commonplace solely gay persons different than human beings. there is a few debatable - yet no longer rejected - theories approximately some animals forgoing heterosexual intercourse as a manner to help develop their siblings and tentative ties to non-reproductive human techniques, yet in those "helper on the nest" circumstances, the helpers forgo intercourse and don't have interaction in gay habit. then lower back it extremely is hard for birds to habit gay activities. The anthropologist Donald Symons of u.s. is possibly the main efficient proponent of organic and organic bases of homosexuality in human beings.

Answer 9

There is no science behind homo or bi sexuality except for possible behavioral science. Being homosexual or bisexual is a choice that a person makes. Many times a person is abused emotionally, physically, sexually, neglected or experienced a traumatic event in there life that can cause them to turn to these behaviors, but it can be cured. Everyone is born heterosexual. Hope this helps.

Answer 10

Research suggests that the hormones that the fetus is exposed to make the difference.

http://seattletimes.nwsource.com/html/localnews/2002340883_gayscience19m.html
http://www.cbsnews.com/stories/2006/03/09/60minutes/main1385230.shtml