Navigation Links
First Americans Arrived on 2 Separate Paths

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:
(Date:6/25/2016)... Oklahoma (PRWEB) , ... June 25, 2016 , ... ... both athletes and non-athletes recover from injury. Recently, he has implemented orthobiologic procedures ... Oklahoma City area —Johnson is one of the first doctors to perform the ...
(Date:6/24/2016)... ... June 24, 2016 , ... Those who have experienced traumatic ... many turn to unhealthy avenues, such as drug or alcohol abuse, as a coping ... released tools for healthy coping following a traumatic event. , Trauma sufferers tend to ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... Global law ... magazine’s 2016 Legal Elite. The attorneys chosen by their peers for this recognition are ... , Seven Greenberg Traurig Shareholders received special honors as members of this year’s Legal ...
(Date:6/24/2016)... ... June 24, 2016 , ... People across the U.S. are sharpening their pencils ... an essay contest in which patients and their families pay tribute to a genetic ... 2016 National Society of Genetic Counselors (NSGC) Annual Education Conference (AEC) this September. ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... feeding the Frederick area economy by obtaining investment capital for emerging technology companies. ... 2½ years that have already resulted in more than a million dollars of ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... , June 24, 2016  Arkis BioSciences, a ... invasive and more durable cerebrospinal fluid treatments, today ... The Series-A funding is led by Innova Memphis, ... and other private investors.  Arkis, new financing will ... and the market release of its in-licensed Endexo® ...
(Date:6/23/2016)... BEVERLY HILLS, Calif. , June 23, 2016 ... faced the many challenges of the current process. Many of ... option because of the technical difficulties and high laboratory costs ... would have to offer it at such a high cost ... to afford it. Dr. Parsa Zadeh , ...
(Date:6/23/2016)... Roche (SIX: RO, ROG; OTCQX: RHHBY) announced ... BRAHMS PCT (procalcitonin) assay as a dedicated testing solution ... this clearance, Roche is the first IVD company in ... sepsis risk assessment and management. PCT is ... levels in blood can aid clinicians in assessing the ...
Breaking Medicine Technology: