Scientific evidence that homosexuality is innate?

I've heard it so regularly: homosexuality in not a choice; folks are born that way. What solid evidence is there to support this claim?

Answers:
Frankly, what appears to be heritable is the potential to develop homosexuality, given the proper environmental inputs. There is no "homosexuality gene" currently identified, nor do I think at hand can ever be: this sort of thing largely involves specific alleles being present at a multiplicity of sites.

All the studies that I hold ever seen that purport to prove that homosexuality is innate any are studies showing anatomical differences in the brains of homosexuals (which could as efficiently be the result of their behavior as the cause) or studies showing a familial clustering of homosexuals (which only proves that the behavior clusters surrounded by families--it could as easily prove that the environment is conducive to homosexual behavior surrounded by those families.

Observational studies within non-human species find homosexual behaviors due to sexual deprivation (a ram, when it's sexually starved satisfactory, will occasionally mount another ram, but will revert to ewes when they are available), due to aberrant responses to sexual triggering (the grey fill goose is an example; the two genders are not adjectives that easy to differentiate, and if a duo of males in courtship season are implicit eachother and one accidently moves in the demeanour that female grey lags do to recieve the advance of a male, the other one may sexually mis-imprint); or due to a mistake surrounded by identification (mosquitoes put in the picture females and males apart by the--I am NOT joking!--fact that womanly mosquitoes have a better pitched whine when they fly. so do newly metamorphosed masculine mosquitoes, which can be mistaken for females).

NO theory of innate or inherent homosexuality has as however accounted for the fact that some homosexuals enjoy chosen to take on heterosexual behavior, and functioned moderately successfully in that, short evidence of the kind of psychological stress you would expect from their trying to overcome an innate behavioral trait.

In fine: I own yet to see evidence that stands up to honest, independent scrutiny.
There is evidence to suggest that homosexuality may have a biological argument. That doesn't neccisarily mean a individual was born that opening. Let me clearify.

The brain is an interactive organ. It is phyically influenced by genetically inate factors AND environment. Studies own suggested that the brains of male homosexuals resemble that of heterosexual females contained by some but not all areas, and the contrary for homosexual females. Their brains may very capably be physically different, but the reason for that difference wasn't neccisarily present at birth.

The bring of homosexuality could be purely genetic, it could be something that people are genetically suseptible to lower than certain conditions (they enjoy the genes but the genes must be activated or they are prone to trustworthy genetic mutations as a response to external factors). It could be caused by exposure to something which typically doesn't affect general public or it could be due to a virus.

The attraction of one sex to the same sex, however, is not a choice. We enjoy very little say-so over what attracts us. As humans we only hold the ability to choose whether or not we accomplishment on those emotions.

There are no studies to suggest that homosexuality is cause by how someone is raised. That is to voice, most parents of homosexuals probably did nothing different from the parents of most heterosexuals that would tender rise to homosexuality in the average being.
It all depends if you are a Momma's boy or not and your father is dysfunctional.

It have to be learned.

Homo's cannot enjoy biological children. So in essence, they cannot multiply similar to a virus..

I think some one up above is trying to update us something.

This sounds like a examine for one of those Commy bastards..
Announced in the ending week or so.a correlation with masculine homosexuality and biological mother havig older sons.studying males contained by adoptive families to remove nurturing influences.

The reality that there are brain differences have been noted contained by a previous answer.

Correlation is not causation but this study is one more of lots that strongly suggest a predisposition exisiting at birth.

There are religious prohibitions against homosexuality. Some peole have trouble next to the idea of homosexuality human being innate. Sin must involve choice to commit a sin. It should be noted that the only choice is whether to conduct yourself upon one's inclinations. By that reasoning, there is no sin surrounded by having an position, only for acting upon it inappropriately.

This is my view and I cannot back it up: But I am convinced that we adjectives fall along a spectrum of situation, and we are not homosexual or heterosexual. This explains homosexual behavior among those who consider themselves heterosexual.

This whole nouns is complicated by traditional moral judgements and we must exercise increased dedication to rational thinking.
This is not true.

-do this track has a role contained by life?
-If yes, why dose dif. sexes where on earth cereated?
-do you accept to live adjectives of your life contained by homosexuality?

- my last Q to this:
If it is innate, why it don't appear in animal?

Now write down this:
-regarding to WHO, first cause of AIDS transmition surrounded by USA is homosexuality.
Simple logic tells us that homosexuality is not a choice. Ask any practicing heterosexual if they ever have any desire to have homosexual experiences. If you are heterosexual, ask yourself if you could "choose" to be a homosexual if that be what society said you were supposed to be. Finally ask yourself why anyone would "choose" to be a despised class of culture subject to discrimination and physical misuse.

Now for science. All humans begin existence as female. No concern what the genes say, the fetus will develop into a girl unless it is bathed within the appropriate hormone at the appropriate time. Think of all the ways this process can stir wrong. Genetically male babies who do not catch the hormone dose, genetically female babies who do carry the hormone dose, males who don't get adequate or don't get it at the right time,. next to all these possibilities, the outcome have not been economically studied.
We do know that some babies are born with ambiguous genitals. Some babies are born beside genitalia of both sexes. Is it any wonder that people are so diverse in their experience of femininity and sexual preference?
According to Michael Weiss, Professor surrounded by Biochemistry & Molecular Biology, Director of the Center for Molecular Oncology, University of Chicago
"all embryos set off life more womanly than male. During the first 35 days of gestation, embryos of any sex develop along classic female lines and enjoy the beginnings of a uterus, fallopian tubes and the upper part of the vagina.SRY, the molecule produced by the manliness gene on the Y chromosome, initiates the cascade of molecular events that lead to the production of testes and blocks the formation of female reproductive organs"
see<http://chronicle.uchicago.edu/941208/sex. for full article

As for the animal monarchy, many plentiful species practice homosexuality. The Bonobo is just one example.
It is impossible to acquire a pregenetic disposition toward homesexuality.
That said, Certain hormones develop at different times so the proclivity can shift. But I instinctively believe that there are some environmental factor as well.
in that is a genetic basis. and to the personality who asked why it doesn't happen within nature? do ur research. I in reality does in primates, wolves and other society base animal species.
Over 450 species have showed gay flurry. It is normal surrounded by the animal kingdom! to see dance to this link! http://www.seedmagazine.com/news/2006/06.

Gay Animals Aug-99
"JERUSALEM -- The London weekly The Independent reports that a pair of gay vultures at

the Jersualem Zoo hold shown the world just how hopeful and caring gay adoptive parents can be."

"As an experiment, Israeli zoologist Shmuel Yidov took a day-old vulture chick that have been hatch in an incubator, inserted it accommodatingly inside a swan's egg and slipped it into the nest. Fooled, the pair took turns to sit on it and melt it until it hatched again."

Dashik and Yehuda consequently reared their little one. 'They did a great job,' said a spokeswoman for the zoo,,Sigalit Dvir. 'They shaded him on hot days, they brought him river from a pond, they fed him, they stopped him falling from the nest.'"

There's more, but you'll enjoy to go to the network site to read it.
http://www.datalounge.com/cgi-bin/datalo.

Another one is chimpanzees. Bisexuality is the norm among male chimps (check out Jane Goodall's books). Effectively a mannish chimp forms a long-term partnership with another manly (which includes sex at times). WHen the higher-ranking of the pair challenge for leadership of the troupe, the aid of sidekick is essential. If successful, they then become nos 1 and 2 respectively surrounded by the pecking order of the troupe for access to the females, as in good health as food etc. But their closest relationship is with respectively other.
This *may be one reason why various male humans enjoy gay or bisexual tendencies - adjectives over 5 million years ?
National Geographic special, "The New Chimpanzees" which aired September 6, 1995 - "Diverse and frequent hetero- and homosexual contact occurs among the animals. . . . Not individual does homosexual behavior exist in nearly every species of every instruct of animal known to science (a reality demonstrated repeatedly by uncounted studies beginning next to Konrad Lorenz, the father of modern zoology) but as one ascends the evolutionary ladder from smaller number sophisticated creatures to hominids, homosexual activity increases contained by frequency."
Proceedings of the National Academy of Sciences (June 1995) - Drs. Shang-Ding Zhang and Ward Odenwald of the National Institutes of Health in Bethesda, Maryland, observed that "Reduced level of the chemical [serotonin] in laboratory animals, such as rats, rabbits, and cats, own been associated to homosexual behaviour." [For your information, serotonin is an far-reaching protein found in virtually adjectives higher species and its production is genetically controlled.]
Proceedings of the Society of Neuroscience (November 1994) - J.K. Graham, G.J. Bloch and Richard Mills of Brigham Young University found surrounded by studies involving rats, that sexual orientation can be determined biologically, and may even be influenced by behavior of pregnant rats. [For your information, Brigham Young University is not exactly a bastion of gay rights.]
On a smaller amount scientific font, he tour guides at the San Francisco zoo will show you geese, sea gulls, penguins, lions and some hoofed animals within homosexual relationships. The zoo has a duet of female geese that hold been ecstatically married for years. [Now you will probably argue that there must be something surrounded by the air contained by San Francisco.]
Perhaps we have more to revise from the "animal kingdom." After adjectives, almost all of what human beings do is "unnatural," which does not automatically equal "wanton." No other creature drinks milk after weaning, drives cars, wears clothes, invokes a God, or writes parcels to CompuServe.
Copyright August 1999, by mggm. All rights reserved, except that free distribution via any medium is permitted as long as author's credit is given and no profit is involved
There are zoos which report homosexual hobby among animals.
Having two homosexual individuals in my loved ones and having see them grow up, I know that parenting has nought to do with their sexuality.
I would resembling to see definitive scientific proof that this is a unprocessed occurence. It might help preserve the hateful from whipping up on gays.


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