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Genes drive ability to orgasm: Scientists say DNA exerts strong influence on whether women climax
Nature Magazine ^ | 8 June 2005 | Roxanne Khamsi

Posted on 06/08/2005 3:40:51 AM PDT by PatrickHenry

A woman's genetic make-up accounts for at least a third of her ability to climax during sex, say researchers, and may even account for as much as 60%.

Further investigations into the genetic differences that influence orgasms in women could help produce drugs to treat female sexual dysfunction, they say.

Relatively little is known about the female orgasm, the peak of sexual excitement normally marked by vaginal contractions. "It's a taboo subject," explains Tim Spector, who directs the Twin Research Unit at St Thomas' Hospital, London, and co-authored the report.

Women do not need to climax in order to conceive and give birth, a fact that makes the evolutionary cause of their orgasm slightly mysterious. In contrast, men who cannot orgasm miss the chance to pass on their genes and fall victim to natural selection.

So what function does the female orgasm serve? As well as making women more interested in the activity of procreation, recent investigations have found the contractions it involves can bring sperm closer to the egg, increasing the chance of conception.

Evolutionary psychologists have also suggested that the female orgasm might help women to select caring partners: those who are particularly attentive in the bedroom may also be more supportive in other aspects of life.

Twin peaks

To find out which factors most affect a woman's ability to climax, Spector and his colleagues sent a questionnaire to more than 4,000 female twins to complete anonymously. Recipients included nearly 700 pairs of identical twins, who share the same DNA.

The researchers asked how often the women climaxed during sex. Only 14% of the women reported always achieving an orgasm. At the other end of the spectrum, 16% of them said they never reach orgasm or are unsure about whether they do or not.

As in other studies of twins, the scientists assume that twins share similar family environments. The overall difference between trends in identical twins and fraternal twins is thus attributed to genetic influences. The analysis suggests that genes explain at least 34% of the probability that a woman orgasms during sex. When it came to masturbation, this number climbed to 45%, the researchers report in Biology Letters1.

This number could go even higher, they add, if one could account for other variables, such as the different techniques of the women's partners. Genetic influences have been seen to account for as much as 60% of variability in other complex traits, such as obesity.

Pleasure in a pill

The number of genes that influence the female orgasm remains unknown. But researchers reason that comparing the DNA of women who always orgasm with that of those who never do could shed light on the biological pathway behind the process. Drugs could then be developed to target the most influential genes or gene products in this pathway.

Medications for male erectile problems, such as Pfizer's Viagra (sildenafil citrate), have already given men more options, says London-based relationship therapist Ruth Mitchell. But she says women lack a similarly popular and effective treatment.

Even with the promise of drugs, Mitchell cautions that many factors besides biology affect the ability to orgasm. "There's such a huge impact from conditioning and expectation," she says.


TOPICS: Culture/Society; Miscellaneous; Philosophy
KEYWORDS: crevolist; gettingintoyourgenes; o; orgasm
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To: exDemMom
I don't think it's all that mysterious. Early in development, the equipment is the same. It's the early exposure to testosterone that causes the male fetus to differentiate as a male; the "default" pathway leads to a female. There is a genetic syndrome where an XY person lacks the androgen receptors and is an infertile female. Since the equipment starts out the same, I expect the nerves and brain connections to be similar, too.

You might be right, but try making that point on 'Oprah'!

61 posted on 06/08/2005 6:37:17 AM PDT by Tallguy
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To: PatrickHenry

What's in my jeans exerts strong influence on whether women climax. Thank you, I'll show myself to the door.


62 posted on 06/08/2005 6:37:17 AM PDT by LanPB01
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To: PatrickHenry
A woman's genetic make-up accounts for at least a third of her ability to climax during sex

When ELSE would a woman climax other than some type of sex?

63 posted on 06/08/2005 6:41:36 AM PDT by Just another Joe (Monthly donors make better lovers. Ask my wife.)
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To: Sir Francis Dashwood

Gene Gene the Dancing Machine?!?!?!

64 posted on 06/08/2005 6:42:33 AM PDT by Ulysses ("Most of us go through life thinking we're Superman. Superman goes through life being Clark Kent!")
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To: PatrickHenry

lol....we are having a good laugh about this one today in the newspaper office.

It came across the wire earlier....so hilarious.


65 posted on 06/08/2005 6:45:25 AM PDT by rwfromkansas (http://www.xanga.com/home.aspx?user=rwfromkansas)
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To: tx_eggman

I was fortunate to have had a good wife – she would always leave the lid up when she was done.


66 posted on 06/08/2005 6:45:28 AM PDT by R. Scott (Humanity i love you because when you're hard up you pawn your Intelligence to buy a drink.)
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To: PatrickHenry
recent investigations have found the contractions it involves can bring sperm closer to the egg, increasing the chance of conception.

Recent investigation? Hasn't this been common knowledge for years and years?

67 posted on 06/08/2005 6:46:52 AM PDT by WhyisaTexasgirlinPA (Prayers for healing and relief from pain for Cowboy...........)
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To: Max in Utah

Usually it worked into conversation after the cigarette.


68 posted on 06/08/2005 6:47:08 AM PDT by R. Scott (Humanity i love you because when you're hard up you pawn your Intelligence to buy a drink.)
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To: GladesGuru

I think the benefit was to the women, not the men.


69 posted on 06/08/2005 6:47:53 AM PDT by R. Scott (Humanity i love you because when you're hard up you pawn your Intelligence to buy a drink.)
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To: Ulysses

Gene Wilder, Gene Harris...


70 posted on 06/08/2005 6:48:40 AM PDT by Sir Francis Dashwood (LET'S ROLL!)
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To: gobucks; PatrickHenry

"I bet the authors spent a lot of time in the magazine asiles looking at Hot Rod magazine, and noting the cars always had a pretty girl w/ them. I can see the cover of Hot Evolution now!!"

Heh heh I wish I could photoshop well...imagine a curvacious cave chick posing seductively next to a brontosaurus' tale...perhaps one leg thrown over it with article titles such as "Natural Selection: engineering your own personal Species!" plastered on the front cover!
YABADABADOOOOOOO!


71 posted on 06/08/2005 6:50:59 AM PDT by mdmathis6
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To: eastforker
To be serious about this article, it is not mentioned that a man can have an ejaculation not involving an orgasm, so IMHO this article is not very scientific at all.

It is a fixation on sex, an idolatry, a fertility cult that has nothing to do with being fertile...

72 posted on 06/08/2005 6:52:22 AM PDT by Sir Francis Dashwood (LET'S ROLL!)
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To: OldEagle
I realize I might be behind the curve, but is orgasm a verb?

It is if you do it right............

73 posted on 06/08/2005 6:52:43 AM PDT by WhyisaTexasgirlinPA (Prayers for healing and relief from pain for Cowboy...........)
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To: Just another Joe
When ELSE would a woman climax other than some type of sex?

My wallet after a good dividend payout...

74 posted on 06/08/2005 6:55:22 AM PDT by Sir Francis Dashwood (LET'S ROLL!)
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To: MEGoody
The most important erogenous zone for women is the mind.

What's the largest sexual organ?

The Brain.

75 posted on 06/08/2005 6:55:36 AM PDT by numberonepal (Don't Even Think About Treading On Me)
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To: longshadow; VadeRetro; All
I once had the experience of reading the Bible out loud to two people, a man and a woman, who were shacking up.

That's from post 23. Anyone else find that to be a bit strange?

76 posted on 06/08/2005 6:55:51 AM PDT by PatrickHenry (Felix, qui potuit rerum cognoscere causas. The List-O-Links is at my homepage.)
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To: PatrickHenry

I would say that poster is a literalist with a tin ear for sarcasm who doesn't often realize when his chain is being yanked. ;)


77 posted on 06/08/2005 6:58:57 AM PDT by Mr. Jeeves ("Violence never settles anything." Genghis Khan, 1162-1227)
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To: R. Scott
I was fortunate to have had a good wife – she would always leave the lid up when she was done.

I grew up with 4 brothers, no sisters ... Mom lost that battle.

Early on in my 26 year (so far) marriage I had to ask myself "is this a ditch I want to die in?" I've been putting the seat back down ever since.

78 posted on 06/08/2005 7:01:45 AM PDT by tx_eggman (Liberalism is only possible in that moment when a man chooses Barabas over Christ.)
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Oh.

79 posted on 06/08/2005 7:05:06 AM PDT by evets (God bless President Bush and VP Cheney)
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To: PatrickHenry
If lying is a turn-off to sex, why are there any creationists? Why haven't they vanished like the 19th-century Shakers who relied on recruitment to maintain their numbers?
80 posted on 06/08/2005 7:06:01 AM PDT by VadeRetro (Liberalism is a cancer on society. Creationism is a cancer on conservatism.)
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