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:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... ... fertility once they have been diagnosed with endometriosis. These women need a treatment ... also require a comprehensive approach that can help for preservation of fertility and ...
(Date:6/25/2016)... TX (PRWEB) , ... June 25, 2016 , ... Austin ... of the American College of Mohs Surgery and to Dr. Russell Peckham for medical ... and highly effective treatment for skin cancer. The selective fellowship in Mohs Micrographic Surgery ...
(Date:6/25/2016)... Aliso Viejo, California (PRWEB) , ... June 25, 2016 , ... ... preset to fit their specific project," said Christina Austin - CEO of Pixel Film ... all fully customizable and all within Final Cut Pro X . Simply select ...
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern Californian, ... and his M.D from the David Geffen School of Medicine at UCLA. He trained ... Angeles to complete his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where ...
(Date:6/25/2016)... ... June 25, 2016 , ... On Friday, June 10, Van Mitchell, Secretary of ... award to iHire in recognition of their exemplary accomplishments in worksite health promotion. , ... Workplace Health & Wellness Symposium at the BWI Marriott in Linthicum Heights. iHire was ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... Ontario , June 27, 2016  VMS Rehab ... Company,s Board will take whatever measures required to build ... Company,s stock which is currently listed on the OTC ... Wexler, Company Chairman and CEO, "We are seeing an ... difficult to understand, not only by the Company, but ...
(Date:6/24/2016)... June 24, 2016   Bay Area Lyme ... Dean Center for Tick Borne Illness , ... Rehabilitation, MIT Hacking Medicine, University of California, Berkeley, ... announced the five finalists of Lyme Innovation ... More than 100 scientists, clinicians, researchers, entrepreneurs, and ...
(Date:6/24/2016)... CLEMENTE, Calif. , June 24, 2016  American Respiratory Labs ... company, is now able to perform sophisticated lung assessments in patients, ... Technologies , Inc. Patients are no longer limited ... ndd,s EasyOne PRO ® , ARL patients like Jeanne R. of ... done in the comfort of her own home. ...
Breaking Medicine Technology: