Navigation Links
First Americans Arrived on 2 Separate Paths
Date:1/8/2009

Study may explain linguistic and cultural differences of native peoples

THURSDAY, Jan. 8 (HealthDay News) -- Genetic evidence suggests that two different waves of people migrated from what is now Siberia at about the same time to become the first settlers in the Americas, a new report says.

Approximately 15,000 to 17,000 years ago, one group of people came to North America via the Beringia landmass, which once connected northeast Siberia to Alaska, and moved down the Pacific coastline, according to findings published online in the Jan. 8 issue of Current Biology. About the same time, another group of people used the Beringia bridge and entered the eastern Rocky Mountain region after crossing an open land corridor between two ice sheets.

These conclusions come from Italian researchers at Universit#224; di Pavia who studied mitochondria DNA from two rare haplogroups, which are subgroups that share a common maternal ancestor. The study found that people with the D4h3 haplogroup spread from Beringia, down the Pacific coast and all the way to Tierra del Fuego in Argentina. The second group of migrants, the X2a haplogroup, came down the ice-free section of North America and stayed on the continent. The two groups combined to become the Paleo-Indians -- the first Americans, according to the researchers.

"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," researcher Antonio Torroni said in a news release issued by the journal's publisher. "Our study now reveals a novel alternative scenario."

If the first Americans came from more than one place, it could help explain the wide linguistic and cultural diversity of native Americans, the researchers said.

More information

The U.S. National Library of Medicine has more about mitochondrial DNA.



-- Kevin McKeever



SOURCE: Cell Press, news release, Jan. 8, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Nose-spray vaccine against botulism effective in first tests
2. Robbins & Myers Announces First Quarter 2009 Results
3. Neuroactive Bike: America's First And Only Mind-Body Fitness Equipment Used For The Ultimate Brain Fitness Gym Program Launched This Month At Lady Of America Fitness Center
4. Collexis BiomedExperts Hits 80,000 Registered Users Within the First Year!
5. Skinny Dippers(TM), First Zero-Calorie Frozen Dessert, Earns Widespread Retail, Online Distribution
6. MAQUET opens North Americas first VARIOP prefabricated operating suite system
7. IMRIS announces first IMRISneuro project in Australia
8. MAQUET Opens North Americas First VARIOP Prefabricated Operating Suite System, Allowing Space Reconfiguration in Hours, Less Disruption Than Traditional Construction
9. Galderma Announces Availability of Epiduo(TM) Gel, the First and Only Combination Treatment with a Retinoid and Benzoyl Peroxide to Treat Acne
10. First Service Design Firm Launches in United States
11. First RapidArc Radiotherapy Treatment in Italy Takes Place at Leading Milan Cancer Center
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... ... June 27, 2016 , ... "FCPX editors can now reveal their ... Cut Pro X," said Christina Austin - CEO of Pixel Film Studios. , ... Pro X users can now reveal the media of their split screens with ...
(Date:6/27/2016)... Overland Park, KS (PRWEB) , ... June 27, 2016 , ... ... leader in retailers of Eyeglasses . , Millions of individuals in the United ... life, eyeglasses have become a way to both correct vision and make a fashion ...
(Date:6/26/2016)... North Carolina (PRWEB) , ... June 26, 2016 , ... ... release of a new product that was developed to enhance the health of felines. ... for centuries. , The two main herbs in the PawPaws Cat Kidney Support ...
(Date:6/25/2016)... Austin, TX (PRWEB) , ... June 25, 2016 , ... ... Fellow of the American College of Mohs Surgery and to Dr. Russell Peckham for ... popular and highly effective treatment for skin cancer. The selective fellowship in Mohs Micrographic ...
(Date:6/25/2016)... Long Beach, CA (PRWEB) , ... June 25, 2016 , ... ... from UCLA with Magna Cum Laude and his M.D from the David Geffen School ... San Diego and returned to Los Angeles to complete his fellowship in hematology/oncology at ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... Story Highlights: ... the health care industry is causing providers to review ... Deloitte offers a suite of solutions for health care ... cost optimization: labor resource analysis, revenue cycle optimization and ... outcomes and better economics ...
(Date:6/24/2016)... June 24, 2016 ... announced the addition of the " Global Markets ... This report focuses ... an updated review, including its applications in various applications. ... market, which includes three main industries: pharmaceutical and biotechnology, ...
(Date:6/24/2016)... -- Research and Markets has announced the addition ... report to their offering. ... The World Market for Companion Diagnostics covers the world ... in the report includes the following: , ... by Region (N. America, EU, ROW), 2015-2020 , World ...
Breaking Medicine Technology: