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Study suggests inbreeding shaped course of early human evolution
UPI ^ | Nov. 28, 2013 | Anon.

Posted on 11/29/2013 7:51:37 AM PST by Pharmboy

CAMBRIDGE, Mass., Nov. 28 (UPI) -- Humans lived for thousands of years in small, isolated populations and resulting inbreeding shaped the course of human evolution, a U.S. researcher says.

Research suggests the severe inbreeding may have created many health problems and the small populations were likely a barrier to the development of complex culture and technologies, NewScientist.com reported Thursday.

David Reich of Harvard Medical School in Boston -- who has sequenced the genome of Neanderthals and that of another extinct human, the Denisovans -- said both species were severely inbred due to small populations.

"Archaic populations had low genetic diversity, really extraordinarily low," he said. "It's among the lowest diversity of any organism in the animal kingdom."

The DNA of one Neanderthal, obtained from a toe bone, had almost no diversity in about one-eighth of the genome -- both copies of each gene were identical.

That suggests the individual's parents were half-siblings, Reich said.

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


TOPICS: Extended News
KEYWORDS: creation; dna; evolution; genes; humanevolution
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As distasteful as this sounds, with such small populations and their isolation it does make sense.
1 posted on 11/29/2013 7:51:37 AM PST by Pharmboy
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To: Pharmboy

The genetic defect known as ‘liberalism’ can probably be traced back to this.


2 posted on 11/29/2013 7:53:22 AM PST by Right Brother
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To: JoeProBono; SunkenCiv; thefactor; blam; neverdem; Black Agnes
Also, see thread from 8 months ago here.


3 posted on 11/29/2013 7:54:48 AM PST by Pharmboy (Democrats lie because they must.)
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To: Pharmboy
severe inbreeding may have created many health problems and the small populations were likely a barrier to the development of complex culture and technologies

On the other hand where would we be without banjo players.


4 posted on 11/29/2013 7:56:46 AM PST by ElkGroveDan (My tagline is in the shop.)
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To: Pharmboy

Hmmm. Wonder to what degree other primates are inbred.


5 posted on 11/29/2013 7:57:42 AM PST by Black Agnes
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To: Right Brother

Explains Barney Frank.


6 posted on 11/29/2013 7:59:00 AM PST by BenLurkin (This is not a statement of fact. It is either opinion or satire; or both.)
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To: Pharmboy

It would have been exceedingly common. Even in the Bible, the lineage of the Patriarchs was either inbreeding or what we would consider very close to inbreeding.

Abraham and Sarah: half-siblings
Isaac and Rebekah: second cousins
Jacob and his wives, Leah and Rachel: first cousins and his wives were full sisters

Not exactly a lot of genetic mixing going on.


7 posted on 11/29/2013 7:59:52 AM PST by Anitius Severinus Boethius (www.wilsonharpbooks.com - Eclipse, the sequel to Bright Horizons is out! Get it now!)
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To: Black Agnes

8 posted on 11/29/2013 8:00:20 AM PST by BenLurkin (This is not a statement of fact. It is either opinion or satire; or both.)
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To: Pharmboy

The beginning of low information voters.

Nothing to see here. Move along.


9 posted on 11/29/2013 8:00:48 AM PST by Perseverando (Obamanation/Obamastan: It's ALL about PEOPLE CONTROL!)
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To: Pharmboy

In the beginning, how could inbreeding not have been a factor?


10 posted on 11/29/2013 8:00:51 AM PST by Baynative (Wake me up early, be good to my dogs and teach my children to pray.)
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To: Black Agnes

Excellent question. The great apes also live in small populations. One difference between them and us, though, is the increased sexual activity of our species and likely the pre-human species too.


11 posted on 11/29/2013 8:01:14 AM PST by Pharmboy (Democrats lie because they must.)
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To: Pharmboy

12 posted on 11/29/2013 8:01:28 AM PST by dfwgator (Fire Muschamp.)
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To: Pharmboy

kinda like duh....


13 posted on 11/29/2013 8:01:51 AM PST by Sacajaweau
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To: Pharmboy
The original New Scientist article can be found here.

But be patient, it takes a while to get there. Reminded me of the old days of a twisted pair and a dial-up.

14 posted on 11/29/2013 8:02:59 AM PST by Pharmboy (Democrats lie because they must.)
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To: Sacajaweau

True enough, but this is often not discussed.


15 posted on 11/29/2013 8:04:20 AM PST by Pharmboy (Democrats lie because they must.)
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To: Pharmboy

16 posted on 11/29/2013 8:07:01 AM PST by mountn man (The Pleasure You Get From Life Is Equal To The Attitude You Put Into It)
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To: Anitius Severinus Boethius

Adam + Eve
\ /
+? +? +? +?

later....
Noah + Wife
\ /
+? +? +? +?


17 posted on 11/29/2013 8:07:26 AM PST by bunkerhill7 ("The Second Amendment has no limits on firepower"-NY State Senator Kathleen A. Marchione.")
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To: Pharmboy

“Archaic populations had low genetic diversity, really extraordinarily low,” he said. “It’s among the lowest diversity of any organism in the animal kingdom.”


Hmm... I wonder why that might be. It’s almost as if there was some event that wiped out nearly every human, while multiples of most animal species were preserved.


18 posted on 11/29/2013 8:07:54 AM PST by Boogieman
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To: Baynative
True enough.

Here's an excerpt from the New Scientist article:

Fossils suggest the inbreeding took its toll, says Erik Trinkaus of Washington University in St Louis, Missouri. Those he has studied have a range of deformities, many of which are rare in modern humans. He thinks such deformities were once much more common (PLoS ONE, doi.org/p6r).

Perhaps this is the reason that monsters, gnomes, etc., are so common in our folklore and myths. They used to be much more common in our populations.

19 posted on 11/29/2013 8:08:41 AM PST by Pharmboy (Democrats lie because they must.)
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To: Boogieman

There is a genetic bottleneck that goes back about 5,000 years. Something happened.


20 posted on 11/29/2013 8:11:04 AM PST by meatloaf
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To: Right Brother

ManBearPig. :=)


21 posted on 11/29/2013 8:11:39 AM PST by Georgia Girl 2 (The only purpose of a pistol is to fight your way back to the rifle you should never have dropped.)
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To: Pharmboy

Educational institutions are in fact proving this with teachers unions,


22 posted on 11/29/2013 8:15:07 AM PST by Big Mack (I didn't claw my way to the top of the food chain to eat VEGETABLES!)
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To: Right Brother

“The genetic defect known as ‘liberalism’ can probably be traced back to this.”

I was thinking this too. Explains a lot, really.


23 posted on 11/29/2013 8:15:19 AM PST by The Antiyuppie ("When small men cast long shadows, then it is very late in the day.")
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To: Pharmboy

And we wonder why the Torah states over and over again with whom you can and can’t have relations.


24 posted on 11/29/2013 8:17:50 AM PST by Jack Hydrazine (Pubbies = national collectivists; Dems = international collectivists; me = independent conservative)
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To: Pharmboy

If that be so, then the middle eastern mohammedans should be the most brilliant people in the world as they marry their cousins.


25 posted on 11/29/2013 8:19:02 AM PST by Ruy Dias de Bivar (Sometimes you need 7+ more ammo. LOTS MORE.)
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To: Pharmboy

Well, if any school would know about inbreeding, it would be Harvard.


26 posted on 11/29/2013 8:25:38 AM PST by blueunicorn6 ("A crack shot and a good dancer")
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To: Pharmboy

Just remember that Islam encourages first cousin marriage and has been inbred for over 1,400+ years. That’s one of the reasons it is a psychotic death cult.


27 posted on 11/29/2013 8:28:00 AM PST by MasterGunner01
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To: Anitius Severinus Boethius

Lot and his daughters...

“Come, let us make our father drink wine, and let us lie with him that we may preserve our family through our father.” So they made their father drink wine that night, and the firstborn went in and lay with her father; and he did not know when she lay down or when she arose. On the following day, the firstborn said to the younger, “Behold, I lay last night with my father; let us make him drink wine tonight also; then you go in and lie with him, that we may preserve our family through our father.”


28 posted on 11/29/2013 8:35:58 AM PST by Hugin ( More firepower!)
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To: Pharmboy


29 posted on 11/29/2013 8:36:51 AM PST by JoeProBono (SOME IMAGES MAY BE DISTURBING VIEWER DISCRETION IS ADVISED;-{)
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To: meatloaf
There is a genetic bottleneck that goes back about 5,000 years. Something happened.

5,000 years ago would have been far too recent - by then, we had diverse civilizations in the Middle East, China, etc.

More like 69,000 - 77,000 years ago.

http://en.wikipedia.org/wiki/Toba_catastrophe_theory

Regards,

30 posted on 11/29/2013 8:38:57 AM PST by alexander_busek (Extraordinary claims require extraordinary evidence.)
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To: alexander_busek

You’re right! Thanks for posting that.


31 posted on 11/29/2013 8:50:11 AM PST by meatloaf
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To: Pharmboy

“a barrier to the development of complex culture and technologies”

i can see where this has played out in several races .......


32 posted on 11/29/2013 9:03:57 AM PST by is_is (VP Dad of Sgt. G - My Hero - "Sleep Well America......Your Marines have your Back")
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To: Pharmboy

As a modern day example, I offer the Hapsburg family.


33 posted on 11/29/2013 9:06:57 AM PST by Black Agnes
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To: Pharmboy
We had a situation in our own family 3 generations ago when 2 brothers married 2 sisters and had a passle of kids.

As a further complication, my mother had 9 siblings.

I have cousins I've never met and don't even know their names.

I remember asking the elderly participants in this about the situation and they always responded "muddy roads".

34 posted on 11/29/2013 9:08:22 AM PST by elkfersupper
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To: Boogieman
Hmm... I wonder why that might be. It’s almost as if there was some event that wiped out nearly every human, while multiples of most animal species were preserved.

No, actually it isn't.

35 posted on 11/29/2013 9:08:27 AM PST by Alter Kaker (Gravitation is a theory, not a fact. It should be approached with an open mind...)
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To: Pharmboy

“with such small populations and their isolation it does make sense. “

It makes total sense, and if true, and is a very likely reasib as to why these species became extinct.


36 posted on 11/29/2013 9:15:30 AM PST by catnipman (Cat Nipman: Vote Republican in 2012 and only be called racist one more time!)
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To: Pharmboy

This could also explain why those who left Africa founded more civilizations and spread farther than those who remained in Africa. They were a subset of the African population but gained Neanderthal diversity plus everyone else they met.


37 posted on 11/29/2013 9:21:27 AM PST by tbw2
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To: Black Agnes

Humans have an effective population size of 1000 to 2000 people, meaning that we could replicate the entire human genetic diversity in 1K to 2K people.
A group of any 55 chimps has more genetic diversity than the human race. This is probably due to humans having fewer chromosomes than other apes (at some point, this mutation slashed our species’ population), and compounded by the Mount Toba eruption 70K years ago that cut our numbers to maybe 10K people.
We’ve been through more population bottlenecks and thus have far less diversity than other primates. Though they’ll catch up because their populations have fallen significantly.


38 posted on 11/29/2013 9:24:11 AM PST by tbw2
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To: tbw2

Interesting thought.


39 posted on 11/29/2013 9:24:33 AM PST by Pharmboy (Democrats lie because they must.)
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To: Anitius Severinus Boethius

Among Muslims, on average, first-cousin marriages probably constitute about half of all marriages around the world. If you add marriages to second cousins you probably have a large majority of marriages. Muslims are victims of genetic decay.


40 posted on 11/29/2013 9:42:32 AM PST by Gluteus Maximus
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To: Right Brother

“The genetic defect known as ‘liberalism’ can probably be traced back to this.”

I have been thinking about that lately. Apparently the Neanderthals had bigger heads than the Homo Sapiens, but they lacked thinking ability.

Since liberals also lack thinking ability, I wonder if they have more Neanderthal genetic material in them than do Conservatives.


41 posted on 11/29/2013 9:48:10 AM PST by angry elephant (Endangered species in Seattle)
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To: Pharmboy

Also “distasteful” and “politically incorrect” is the Islamic culture fixation on first cousin marriage.

1,400 years of such incest carries a genetic penalty.

So does 1,400 years of selection for cruely and agressiveness.

The end result is: THE KORANIMAL

Selective breeding’s gift that keeps on killing.


42 posted on 11/29/2013 9:55:02 AM PST by GladesGuru (Islam Delenda Est - Because of what Islam is and because of what Muslims do.)
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To: Pharmboy
Inbreeding is actually very common in some domestic animals. My sister-in-law raises show dogs. To win prizes, the dogs must conform to a "template" for the particular breed: shape, coloration, etc. To enhance conformance to the template, she breeds grandparent dogs to their grandchildren. I can't help but wonder what defects are being amplified along with the desirable traits.
43 posted on 11/29/2013 9:59:38 AM PST by JoeFromSidney ( book, RESISTANCE TO TYRANNY, available from Amazon.)
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To: elkfersupper

Now, we know why you don’t admire Obama.

Bet you haven’t demonstrated for those Colorado Gunlaws, either.

;-)


44 posted on 11/29/2013 10:00:25 AM PST by GladesGuru (Islam Delenda Est - Because of what Islam is and because of what Muslims do.)
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To: JoeFromSidney
Yes...this is human-directed unnatural selection. And there are more genetic diseases among highly inbred canine subspecies, as you're probably aware.
45 posted on 11/29/2013 10:02:41 AM PST by Pharmboy (Democrats lie because they must.)
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To: Pharmboy
Need to go to Iceland and help them out with their problem.


46 posted on 11/29/2013 10:39:02 AM PST by BBell (The Blue Dog is Stupid)
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To: BBell
I was in Boston a few weeks ago for a few days with my wife and a group entered the hotel elevator. Four tall, great looking people (60-ish couple, and a 30-something couple) who thanked me for holding the door for them. The 'thanker' had a slight accent.

I asked where they were from? "Iceland" was the reply. I welcomed them to the US and hoped they enjoyed their stay.

When we left, I told the wife: "That's what the Vikings looked like."

47 posted on 11/29/2013 10:44:04 AM PST by Pharmboy (Democrats lie because they must.)
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To: Pharmboy

There was some very severe inbreeding after the Flood. There were ONLY THREE COUPLES (six people) who then produced the entire human race we have today!


48 posted on 11/29/2013 10:48:16 AM PST by Star Traveler (Remember to keep the Messiah of Israel in the One-World Government that we look forward to coming)
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To: Boogieman

So basically you’re saying the account of Noah in the Old Testament is false. There were more individual humans on the ark than of any other species so humans would have greater genetic diversity than other species.


49 posted on 11/29/2013 11:14:22 AM PST by Go_Raiders (Freedom doesn't give you the right to take from others, no matter how innocent your program sounds.)
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To: JoeFromSidney
"I can't help but wonder what defects are being amplified along with the desirable traits."

The German Shepard breed has a propensity for weak hips as a result of this in-breeding.

50 posted on 11/29/2013 12:22:45 PM PST by DJ Taylor (Once again our country is at war, and once again the Democrats have sided with our enemy.)
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