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Old 12-12-2012, 06:56 AM  
Direckshun Direckshun is online now
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Scientists may have finally discovered why you're gay.

That's right, YOU.

YOU'RE ALL GAY.

http://www.usnews.com/news/articles/...people-are-gay

Scientists May Have Finally Unlocked Puzzle of Why People Are Gay
Lesbians get it from fathers, gay men from mothers?
By Jason Koebler
December 11, 2012

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 homosexuals get that trait from their opposite-sex parents: A lesbian will almost always get the trait from her father, while a gay man will get the trait from his mother.

The hereditary link of homosexuality has long been established, but scientists knew it was not a strictly genetic link, because there are many pairs of identical twins who have differing sexualities. Scientists from the National Institute for Mathematical and Biological Synthesis say homosexuality seems to have an epigenetic, not a genetic link.

Long thought to have some sort of hereditary link, a group of scientists suggested Tuesday that homosexuality is linked to epi-marks — extra layers of information that control how certain genes are expressed. These epi-marks are usually, but not always, "erased" between generations. In homosexuals, these epi-marks aren't erased — they're passed from father-to-daughter or mother-to-son, explains William Rice, an evolutionary biologist at the University of California Santa Barbara and lead author of the study.

"There is compelling evidence that epi-marks contribute to both the similarity and dissimilarity of family members, and can therefore feasibly contribute to the observed familial inheritance of homosexuality and its low concordance between [identical] twins," Rice notes.

Rice and his team created a mathematical model that explains why homosexuality is passed through epi-marks, not genetics. Evolutionarily speaking, if homosexuality was solely a genetic trait, scientists would expect the trait to eventually disappear because homosexuals wouldn't be expected to reproduce. But because these epi-marks provide an evolutionary advantage for the parents of homosexuals: They protect fathers of homosexuals from underexposure to testosterone and mothers of homosexuals from overexposure to testosterone while they are in gestation.

"These epi-marks protect fathers and mothers from excess or underexposure to testosterone — when they carry over to opposite-sex offspring, it can cause the masculinization of females or the feminization of males," Rice says, which can lead to a child becoming gay. Rice notes that these markers are "highly variable" and that only strong epi-marks will result in a homosexual offspring.

Though scientists have long suspected some sort of genetic link, Rice says studies attempting to explain why people are gay have been few and far between.

"Most mainstream biologists have shied away from studying it because of the social stigma," he says. "It's been swept under the rug, people are still stuck on this idea that it's unnatural. Well there are many examples of homosexuality in nature, it's very common." Homosexual behavior has been observed in black swans, penguins, sheep, and other animals, he says.

Rice's model still needs to be tested on real-life parent-offspring pairs, but he says this epigenetic link makes more sense than any other explanation, and that his team has mapped out a way for other scientists to test their work.

"We've found a story that looks really good," he says. "There's more verification needed, but we point out how we can easily do epigenetic profiles genome-wide. We predict where the epi-marks occur, we just need other studies to look at it empirically. This can be tested and proven within six months. It's easy to test. If it's a bad idea, we can throw it away in short order."

Last edited by Direckshun; 12-12-2012 at 08:00 AM..
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Old 12-12-2012, 12:43 PM   #31
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Originally Posted by alpha_omega View Post
After 32K+ posts, you should know that it is ghey. C'mon.
I have brought shame to my ancestors.
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Old 12-12-2012, 01:00 PM   #32
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Originally Posted by donkhater View Post
So homosexuality is a genetic disorder? Got it.
Not really. If you read the article, presuming they are right, the parents who carried this trait had a reproductive advantage, and their same-sex offspring also had that reproductive advantage. (to put it simply, men were more "manly", and women were more "girly")

Their opposite-sex offspring may have had a disadvantage, but apparently the advantage more than made up for that.
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Old 12-12-2012, 01:10 PM   #33
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Originally Posted by loochy View Post
because they caught the virus from another homosexual
I just hope we can find the cure.
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Old 12-12-2012, 01:13 PM   #34
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I just hope we can find the cure.
It's cowbell. More cowbell.
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Old 12-12-2012, 01:49 PM   #35
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I find it amusing that those who understand genetics and science in general the least are those that speak up the most.

epigenetics, in particular genetic imprinting (which this alludes to), are a hot area for research, and explain a lot of where nature and nurture meet up. in this case, it also brings in a bit of sociobiology, which uses game theory (and another of my favorite theories, the red queen theory) to explain why we see certain evolutionary behavior and phenomena that can't be explained otherwise...interesting stuff.

a few points:

1) scientific american is NOT a peer-reviewed journal. vis-a-vis, not a valid source for whether something has been proven or disproven. it's like citing Redbook in a budget discussion--it just has no place.

2) this makes a lot of sense from the scope of several highly plausible theories. it's testable, too. that's the awesome thing about science--no need to bitch and moan back and forth about who is right and who is wrong; go test your hypothesis, collect data, and publish--(good luck publishing, too--peer review is BRUTAL sometimes).

I'll point out that this is an area that I'm getting my Ph.D in--Genetics--and epigenetics can very quickly delve into the realm of the confusing. it gets very mechanistic-based in explanations, but once you get through the muck, it's very elegant. go look up Angelman syndrome and/or Prader-Willi syndrome. these are due to parental imprinting. Same reason why calico cats, when cloned (yes, it has been done), don't exhibit the same coloration--it isn't a carbon copy. Epigenetics. amazing stuff!
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Old 12-12-2012, 02:02 PM   #36
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Scientific American reported a later study to Hamer's. It was one out of about 20 something reports btw

Peer review is not a perfect system. Remember what was done to Dr. Semmelweis by his own peers.
Alfred Kinsey falsified data to promote a personal agenda too.

The original study conducted in 1993 was done by an openly "gay" activist and researcher Dr. Dean Hamer of the of the National Cancer Institute was what I was commenting on.

There was a later study that replicated Hamer's discrediting the 1993 study. This was done by the Department of Clinical Neurological Sciences at the University of Western Ontario and the Department of Genetics at Stanford Medical School concluded that "data do not support the presence of a gene of large effect influencing sexual orientation."

Dr. Richard Pillard, a professor of psychiatry at Boston University's School of Medicine, did twin studies showing "that sexuality is greatly influenced by environment, and that the role of genetics is, in the end, limited."

American Psychiatric Association's Fact Sheet on Sexual Orientation (2000): "There are no replicated scientific studies supporting any specific biological etiology for homosexuality". I realize this is earlier though.

I say the medical jury is still out.
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Old 12-12-2012, 02:04 PM   #37
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Yah but did they discover why BEP is so hairy?

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Old 12-12-2012, 02:08 PM   #38
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Old 12-12-2012, 02:09 PM   #39
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Originally Posted by BucEyedPea View Post
Scientific American was one out of about 30, btw

Peer review is not a perfect system.
links? credible links only, please.

peer-review works for several reasons, namely it keeps everyone honest and ensures that a high level of quality research is being done. shoddy work need not apply.

you know, like the shit you believe in. it couldn't (and doesn't) pass muster. I can understand why you're against peer-review.

yes--it may not be a 100% perfect system, but it has a pretty high P-value for significance. something that can't be said for your pseudoscience.
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Old 12-12-2012, 02:19 PM   #40
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I meant to also restate, I was responding to a post made by Bump, Post #14, not the article.
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Old 12-12-2012, 02:23 PM   #41
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Originally Posted by h5n1 View Post
links? credible links only, please.
I posted the sources. You can take it from there.

Some of those are no longer online though, because I checked. Oh, and what is credible to one may not be too another.

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peer-review works for several reasons, namely it keeps everyone honest and ensures that a high level of quality research is being done. shoddy work need not apply.
I only said it was not perfect.

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you know, like the shit you believe in. it couldn't (and doesn't) pass muster. I can understand why you're against peer-review.
I didn't say I was against peer review. I said it wasn't perfect. Nice ad hominem logical fallacy there. Especially for a man who claims to be one of science and empiricism. If you're so smart you'd at least be able to read or follow what I responded to.

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yes--it may not be a 100% perfect system...
That's all I said.

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....but it has a pretty high P-value for significance. something that can't be said for your pseudoscience.
Overreact much?

Tell that to those doctors. As for me, the jury is out. And it is for others. Either way, wherever it comes down, doesn't change by views on public policy.
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Old 12-12-2012, 02:32 PM   #42
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You're aware h5n1 that this article says these scientists "suggest" this and that they have to test this theory on real-life parent-offspring pairs. But I see, as a man of science, you are making conclusions, already.
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Old 12-12-2012, 02:49 PM   #43
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Originally Posted by BucEyedPea View Post
The original study conducted in 1993 was done by an openly "gay" activist and researcher Dr. Dean Hamer of the of the National Cancer Institute was what I was commenting on.
The **** does it matter if the scientist was openly gay or not?
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Old 12-12-2012, 02:50 PM   #44
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Originally Posted by Bump View Post
by whom?
Don't make me call the science police. Why are atheists so against science?
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Old 12-12-2012, 02:51 PM   #45
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The **** does it matter if the scientist was openly gay or not?
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