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First Americans arrived as 2 separate migrations, according to new genetic evidence
www.physorg.com ^ | 01/09/2009 | Source: Cell Press

Posted on 01/09/2009 7:12:43 AM PST by Red Badger

The first people to arrive in America traveled as at least two separate groups to arrive in their new home at about the same time, according to new genetic evidence published online on January 8th in Current Biology, a Cell Press publication.

After the Last Glacial Maximum some 15,000 to 17,000 years ago, one group entered North America from Beringia following the ice-free Pacific coastline, while another traversed an open land corridor between two ice sheets to arrive directly into the region east of the Rocky Mountains. (Beringia is the landmass that connected northeast Siberia to Alaska during the last ice age.) Those first Americans later gave rise to almost all modern Native American groups of North, Central, and South America, with the important exceptions of the Na-Dene and the Eskimos-Aleuts of northern North America, the researchers said.

" Recent data based on archeological evidence and environmental records suggest that humans entered the Americas from Beringia as early as 15,000 years ago, and the dispersal occurred along the deglaciated Pacific coastline," said Antonio Torroni of Università di Pavia, Italy. "Our study now reveals a novel alternative scenario: Two almost concomitant paths of migration, both from Beringia about 15,000 to 17,000 years ago, led to the dispersal of Paleo-Indians—the first Americans."

Such a dual origin for Paleo-Indians has major implications for all disciplines involved in Native American studies, he said. For instance, it implies that there is no compelling reason to presume that a single language family was carried along with the first migrants.

When Columbus reached the Americas in 1492, Native American occupation stretched from the Bering Strait to Tierra del Fuego, Torroni explained. Those native populations encompassed extraordinary linguistic and cultural diversity, which has fueled extensive debate among experts over their interrelationships and origins.

Recently, molecular genetics, together with archaeology and linguistics, has begun to provide some insights. In the new study, Ugo Perego and Alessandro Achilli of Torroni's team analyzed mitochondrial DNA from two rare haplogroups, meaning mitochondrial types that share a common maternal ancestor. Mitochondria are cellular components with their own DNA that allow scientists to trace ancestry and migration because they are passed on directly from mother to child over generations.

Their results show that the haplogroup called D4h3 spread from Beringia into the Americas along the Pacific coastal route, rapidly reaching Tierra del Fuego. The other haplogroup, X2a, spread at about the same time through the ice-free corridor between the Laurentide and Cordilleran Ice Sheets and remained restricted to North America.

"A dual origin for the first Americans is a striking novelty from the genetic point of view and makes plausible a scenario positing that within a rather short period of time, there may have been several entries into the Americas from a dynamically changing Beringian source," the researchers concluded.


TOPICS: Culture/Society; Miscellaneous; News/Current Events
KEYWORDS: acrossatlanticice; antoniotorroni; brucebradley; dennisstanford; dna; godsgravesglyphs; helixmakemineadouble; solutreans
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To: Vaquero
might have come from Europe


via Louisiana?


Espera DeCorti, aka "Iron Eyes Cody"

21 posted on 01/09/2009 7:42:40 AM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: Red Badger
Need to confirm from ticket seller at gate!!!
22 posted on 01/09/2009 7:43:44 AM PST by org.whodat (Conservatives don't vote for Bailouts for Super-Rich Bankers! Republicans do!)
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To: Red Badger
I think they did, but were “wiped out” by a meteor strike in the late ice age............

they were all over north America, I assume some of them made it further south were the meteor strike spared some...

23 posted on 01/09/2009 7:49:20 AM PST by Vaquero ( "an armed society is a polite society" Robert A. Heinlein)
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To: Gondring
A WOPahoe Indian!
24 posted on 01/09/2009 7:49:26 AM PST by allmendream (Wealth is EARNED not distributed, so how could it be redistributed?)
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To: Vaquero

The Clovis people were all over North America, since their arrowheads have been found from the Carolinas to Mexico. But they disappeared from the archaeological records suddenly all over the place. The devastation from the meteor strike must have been huge and widespread. No animals and no vegetation left, so they starved if they survived the initial destruction.............


25 posted on 01/09/2009 7:53:52 AM PST by Red Badger (I was sad because I had no shoes to throw, until I met a reporter who had no feet.....)
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To: allmendream
A WOPahoe Indian!

LOL

26 posted on 01/09/2009 7:55:58 AM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: colorcountry

“What?? They didn’t come from Judea?”

They were The People’s Front of Judea.


27 posted on 01/09/2009 8:00:35 AM PST by edh (I need a better tagline)
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To: Red Badger; Unassuaged

From Europe via Siberia. Got it. ;-)

That east of the Rockies thing covers a lot of ground and possibilities but Europe sound right. Although, I’ve never heard of any aboriginal named Olaf Running Bear.


28 posted on 01/09/2009 8:10:24 AM PST by decimon
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To: decimon

No, not via Siberia, via north Atlantic and Greenland. There was a huge ice sheet that covered the entire Arctic ocean, so you could theoretically walk from Europe directly to North America............


29 posted on 01/09/2009 8:20:22 AM PST by Red Badger (I was sad because I had no shoes to throw, until I met a reporter who had no feet.....)
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To: colorcountry
What?? They didn’t come from Judea?

I'm shocked, shocked I tell you.

30 posted on 01/09/2009 8:32:36 AM PST by Godzilla (Gal 4:16 Am I therefore become your enemy, because I tell you the truth?)
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To: Red Badger
All of the studies, from the get go, are based on the prevailing supposition that for any people who ever lived in the Americas, they HAVE to’ve come from the “Old World”.

Native American legends contend they were always here.

Whose to say they weren't?

Or whose to say the migrations went “left to right” and not “right to left”?

31 posted on 01/09/2009 9:00:07 AM PST by maine-iac7 ("He has the right to criticize who has the heart to help" Lincoln)
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I thought there was evidence of habitation much older than 15-17,000 years...


32 posted on 01/09/2009 9:42:06 AM PST by D-fendr (Deus non alligatur sacramentis sed nos alligamur.)
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To: maine-iac7

The latest theory that I think is possible is the “euro” people hunted and fished along the edge of the great ice sheet and eventually would up along the North American east coast, while later the “asian” people came across the Bering land bridge. Some may even have come by boats across from Polynesia to South American west coast..............


33 posted on 01/09/2009 10:03:57 AM PST by Red Badger (I was sad because I had no shoes to throw, until I met a reporter who had no feet.....)
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To: Red Badger
"Uh, Houston..."


34 posted on 01/09/2009 2:18:58 PM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: wolfpat

Why?


35 posted on 01/09/2009 2:23:43 PM PST by tbw2 (Freeper sci-fi - "Humanity's Edge" - on amazon.com)
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To: maine-iac7

The genetic evidence.


36 posted on 01/09/2009 2:26:32 PM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: maine-iac7
Whose to say they weren't?

Carbon dating showss humans and primitive humans existing in Africa and Eurasia for well over a million years. No such humans have been found in America before the late ice age.

37 posted on 01/09/2009 2:29:34 PM PST by Lucius Cornelius Sulla (Just because I am an Oogedy-Boogedy kind of guy!)
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To: Red Badger
The devastation from the meteor strike must have been huge and widespread.

If only they'd spent their defense research budget on a meteor shield instead of Folsom points.... >sigh<

One big asteroid is all it takes...

38 posted on 01/09/2009 2:30:34 PM PST by Gondring (Paul Revere would have been flamed as a naysayer troll and told to go back to Boston.)
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To: Red Badger; decimon; AdmSmith; Berosus; Convert from ECUSA; dervish; Ernest_at_the_Beach; ...

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Thanks Red Badger for topic and ping, and thanks decimon for the link.

To all -- please ping me to other topics which are appropriate for the GGG list.
GGG managers are SunkenCiv, StayAt HomeMother, and Ernest_at_the_Beach
 

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39 posted on 01/09/2009 2:31:58 PM PST by SunkenCiv (First 2009 Profile update Tuesday, January 6, 2009___________https://secure.freerepublic.com/donate/)
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To: tbw2

I’ll have to dig out a book I read some years ago to refresh my memory. It’s in the storage shed, several layers deep.

Most all of the world’s religions that believe in any form of deity have major similarities. The Hopi aren’t like any of those. They seem to know some spiritual stuff that escapes other cultures. According to this book, their history starts when they came to Earth. Also according to this book, they have knowledge of alien civilizations.

I’ve been meaning to try to read up on them, to get to the bottom of the impressions left me by that book, but I haven’t had time of late.


40 posted on 01/09/2009 2:43:53 PM PST by wolfpat (Revolt, and re-establish the Constitution as the law of the land!)
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