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Neanderthal-human sex bred light skins and infertility
New Scientist ^ | 01/29/2014

Posted on 01/29/2014 8:00:02 PM PST by SeekAndFind

IT IS surprising what a little hanky-panky can do. A handful of sexual encounters between humans and Neanderthals made many of us what we are today, affecting both our appearance and our vulnerability to disease. But the genetic legacy left by the Neanderthals also highlights just how different we are from our sister species.

[SNIP]

... the adaptation took thousands of years to become universal. A third study published this week describes a DNA analysis of one person who lived in Stone Age Europe about 7000 years ago – 40,000 years after any Neanderthal interbreeding. His genes suggest his skin was dark (Nature, doi.org/q74). It may be that the Neanderthal keratin affected early Eurasians' hair instead, perhaps straightening it.

Not all of the Neanderthal genes are beneficial. Sankararaman and Reich found that our Neanderthal inheritance includes several genes that make us susceptible to diseases including type 2 diabetes, lupus and Crohn's disease.

Some of the genes, meanwhile, appear to have led to fertility problems. For instance, Sankararaman found that the X chromosome is almost devoid of Neanderthal DNA. This suggests that most Neanderthal DNA that wound up on the X chromosome made the bearer less fertile – a common occurrence when related but distinct species interbreed – and so it quickly disappeared from the human gene pool. “Neanderthal alleles were swept away,” says Sankararaman.

(Excerpt) Read more at newscientist.com ...


TOPICS: History; Science
KEYWORDS: evolution; godsgravesglyphs; helixmakemineadouble; infertility; neandertal; neandertals; neanderthal; neanderthals
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To: SeekAndFind

What we’re gonna do right here is go back, way back, back into time......

http://www.youtube.com/watch?v=QgktcySf_aw


21 posted on 01/29/2014 8:44:42 PM PST by dfwgator
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To: EricT.

The day Laz stops hitting it the human race will become extinct.


22 posted on 01/29/2014 8:48:25 PM PST by jmacusa ("Chasing God out of the classroom didn't usher in The Age of Reason''.)
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To: Zuben Elgenubi

I remember that line :-)

From “Cocoon”
http://www.imdb.com/title/tt0088933/?ref_=fn_al_tt_1

“So hard a cat couldn’t scratch it”


23 posted on 01/29/2014 8:53:58 PM PST by Bobalu (Happiness is a fast ISR)
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To: CrazyIvan
I assume that this happened after humans invented beer.

*********************************************

Pub sign (I have seen the picture):

"Helping ugly people have sex since 1864"

24 posted on 01/29/2014 8:59:16 PM PST by Qiviut (It's hard to be a donk if you're sane & it's hard to be a pubbie if you have any integrity.)
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To: Diana in Wisconsin

LOL


25 posted on 01/29/2014 9:18:13 PM PST by freekitty (Give me back my conservative vote; then find me a real conservative to vote for)
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To: TigersEye
OK, since I was without visual clues, how did you determine that was "female"?

No fair using Rachael Madcow comparisons............

26 posted on 01/29/2014 9:23:24 PM PST by doorgunner69
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To: JSDude1

So even though they’ve mapped the Neanderthal genome, you don’t believe they existed?


27 posted on 01/29/2014 9:28:24 PM PST by GunRunner
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To: Bobalu

Good memory Babalu for a good movie. It was the first time I heard ‘cat couldn’t scratch it”. lol


28 posted on 01/29/2014 9:30:15 PM PST by Zuben Elgenubi (NOPe to GOPe)
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To: doorgunner69

I just assumed that Neanderthal men weren’t big on shaving.


29 posted on 01/29/2014 10:18:42 PM PST by TigersEye (Stupid is a Progressive disease.)
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To: GunRunner

It’s a separate strain of normal human being.


30 posted on 01/29/2014 10:26:23 PM PST by JSDude1 (Defeat Hagan, elect a Constutional Conservative: Dr. Greg Brannon!)
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To: Diana in Wisconsin
I wasn't gonna laugh...but the *SNORT* took me over the edge!....

Sometimes its all about delivery...(and I'm still grinning)

31 posted on 01/29/2014 10:33:14 PM PST by M-cubed
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To: SeekAndFind
"Neanderthal-human sex bred light skins and infertility"

In a related study, scientists found that Neanderthals mating with gorillas were the ancestors of Congressman Alan Grayson. Scientists were amazed at the impact on the Congressman's appearance and intelligence, noting the DNA similarities, in particular, with the gorilla.


32 posted on 01/29/2014 10:43:41 PM PST by tom h
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To: dfwgator

I like the music video version:

https://www.youtube.com/watch?v=VlRXQEA0yj0


33 posted on 01/29/2014 11:36:42 PM PST by dynoman (Objectivity is the essence of intelligence. - Marylin vos Savant)
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To: GrandJediMasterYoda

Where would you tap it GJM Yodi? I’d be sceerd to even have a tea with it.


34 posted on 01/30/2014 2:32:08 AM PST by mcshot ("What's right is right"...usedtobe anyway)
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To: JSDude1

I believe in another 30,000 years they’ll be saying the same about the Euro (white) gene. Europe and US are the only places that open their gates to immigrants from the 3rd world. At the same time Asia and Africa over the last 100 years have expelled all Euros.
In 30,000 years, I’m sure they say the same thing. Africa - yep still black, Asia - yep still Asian, but Europe 2% Euro gene.


35 posted on 01/30/2014 4:51:35 AM PST by Undecided 2012
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To: Undecided 2012

Don’t worry too much - the Chinese will be able to reconstruct pretty Europeans.


36 posted on 01/30/2014 7:47:58 AM PST by olepap (Your old Pappy)
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To: JSDude1

If by “separate strain” you mean subspecies, that’s what they’re classified as. But we’ve mapped their differences from modern and prehistoric humans, and the differences make them distinct, just as the African elephant is not the same thing as an Asian elephant.


37 posted on 01/30/2014 8:32:19 AM PST by GunRunner
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To: StayAt HomeMother; Ernest_at_the_Beach; decimon; 1010RD; 21twelve; 24Karet; 2ndDivisionVet; ...
Note: this topic was posted 1/29/2014. Thanks SeekAndFind.

38 posted on 06/28/2014 8:47:04 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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The Neandertal Enigma
by James Shreeve

in local libraries
"Frayer's own reading of the record reveals a number of overlooked traits that clearly and specifically link the Neandertals to the Cro-Magnons. One such trait is the shape of the opening of the nerve canal in the lower jaw, a spot where dentists often give a pain-blocking injection. In many Neandertal, the upper portion of the opening is covered by a broad bony ridge, a curious feature also carried by a significant number of Cro-Magnons. But none of the alleged 'ancestors of us all' fossils from Africa have it, and it is extremely rare in modern people outside Europe." [pp 126-127]

39 posted on 06/28/2014 8:48:03 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SeekAndFind

Someday maybe Fred will win the fight.

Then that cat will stay out for the night.


40 posted on 06/28/2014 9:49:17 AM PDT by P.O.E. (Pray for America)
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