Navigation Links
Texas A&M scientists say early Americans arrived earlier
Date:3/20/2008

COLLEGE STATION A team led by two Texas A&M University anthropologists now believes the first Americans came to this country 1,000 to 2,000 years earlier than the 13,500 years ago previously thought, which could shift historic timelines.

The teams findings are outlined in a review article in Science magazine titled The Late Pleistocene Dispersal of Modern Humans in the Americas, which synthesizes new data suggesting the migration from Alaska started about 15,000 years ago.

This theory is supported by not only archaeological evidence, but also from genetic evidence from living and ancient populations, says Ted Goebel, an anthropology professor at Texas A&M and associate director of Texas A&Ms Center for the Study of the First Americans. He conducted the research with Michael R. Waters, a fellow anthropology professor at Texas A&M and director of the Center for the Study of the First Americans, and Dennis H. ORourke, an anthropology professor at the University of Utah.

Previous theories stated that the first migrants spread from Beringia to Tierra del Fuego over a few centuries about. Goebel says scientists have concluded that the peopling of America was a much more complex process.

The team focused primarily on molecular genetic, archaeological and human skeletal evidence to create a working model that explains the dispersal of modern humans across the New World.

Molecular geneticists have used refined method and an increasing sample of living populations and ancient remains to provide information on the Old World origins of the first Americans, the timing of their initial migration to the New World and the number of major dispersal events.

Archaeologists have found new sites and reinvestigated old ones using new methods to explain how early populations colonized North and South America.


'/>"/>

Contact: Kelli Levey
klevey@tamu.edu
979-845-4645
Texas A&M University
Source:Eurekalert

Page: 1

Related biology news :

1. Texas researchers and educators head for Antarctica
2. Ceres and Texas A&M to develop and market high-biomass sorghum for biofuels
3. Gulf of Mexico dead zone to be studied by University of Texas at Austin marine scientists
4. UT Southwestern scientist honored among best in Texas research
5. Rices West honored as one of Texas best researchers
6. Texas Hospital nations first to use large-scale cocoon strategy against whooping cough
7. Texas A&M testing oral contraceptives for animals
8. UK scientists working to help cut ID theft
9. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
10. Comet probes reveal evidence of origin of life, scientists claim
11. Scientists link fragile X tremor/ataxia syndrome to binding protein in RNA
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/12/2014)... attack from a pathogen, they sometimes respond by killing ... committing "cell suicide" to thwart further damage from the ... microscopic, spots or lesions on the plant. , But ... the plant regulates this "spotty" defense mechanism because the ... North Carolina State University have identified a number of ...
(Date:9/12/2014)... of dendritic cells in human skin have assorted functions ... report researchers in the journal EMBO Molecular Medicine ... the composition of dendritic cells in psoriatic skin lesions ... the disease. , "We urgently need new ways ... to patients and reduce the incidence of known side ...
(Date:9/11/2014)... Northumberland and Durham" by Nathaniel John Winch is re-published ... an example of combining modern information technology together with ... and data re-use. This publication will be supporting ongoing ... be seen as a model for other regions in ... the meticulous detail of old books with the interconnectedness ...
Breaking Biology News(10 mins):Corn spots: Study finds important genes in defense response 2Dendritic cells affect onset and progress of psoriasis 2Re-publication of 'Flora of Northumberland and Durham' (1831): A dramatic account of change 2Re-publication of 'Flora of Northumberland and Durham' (1831): A dramatic account of change 3
... ecosystem below an Antarctic glacier and learned that it survived ... growth. Described in the April 17 issue of ... a pool of brine trapped below Taylor Glacier and next ... Priscu , co-author of the Science article. Priscu ...
... over, Y chromosome it,s time X got some ... chromosome associated with being female, University of California, Berkeley, ... history of the X chromosome is every bit as ... important clues to the origins and benefits of sexual ...
... Sven Enerbck, Professor at the Institute of Biomedicine at the ... scientists who published their results in The New England ... Enerbck and others show that adults use brown fat to ... new possibilities in treating overweight and obesity. It has ...
Cached Biology News:Ancient ecosystem thrives millions of years below Antarctic glacier 2The story of X -- evolution of a sex chromosome 2The story of X -- evolution of a sex chromosome 3The story of X -- evolution of a sex chromosome 4
(Date:9/12/2014)... (PRWEB) September 12, 2014 Advancing ... and decontamination of chemical and biological threats is ... by Worcester Polytechnic Institute (WPI) and the Georgian ... the Science for Peace and Security Programme of ... of NATO’s Advanced Research Workshop series, the event ...
(Date:9/12/2014)... (PRWEB) September 12, 2014 Today, “The ... on Indiegogo. , The film, directed by former ... Aldrin, Shimon Peres, Ashton Kutcher, Will.i.Am, Michio Kaku, and ... and there’s only one university in the world devoted ... change the lives of a billion people: Singularity University. ...
(Date:9/12/2014)... 2014 Sandia Biotech, Inc. announced today ... with STC.UNM (STC) for a technology developed by researchers ... New Mexico, and Queen Mary University of London in ... Recombinant Fluorescent Antibody Technology Platform (RFAP) was developed by ... and Dr. Angray Kang from Queen Mary’s Department of ...
(Date:9/11/2014)... (hiPSCs), researchers have gained new insight into what ... of neuronal signaling associated with this disease. They ... hiPSCs of healthy individuals and of patients with ... cells to release neurotransmitters, such as dopamine, that ... to various disorders. By discovering a simple method ...
Breaking Biology Technology:Worcester Polytechnic Institute to Lead Scientific Workshop on Nanoscale Defenses for Biological and Chemical Threats 2Worcester Polytechnic Institute to Lead Scientific Workshop on Nanoscale Defenses for Biological and Chemical Threats 3Documentary Film that Follows Singularity University Students as They Change the World Launches its IndieGoGo Fundraising Campaign 2Sandia Biotech and STC.UNM Announce Option Agreement to License Novel Recombinant Antibody Technology 2Sandia Biotech and STC.UNM Announce Option Agreement to License Novel Recombinant Antibody Technology 3Sandia Biotech and STC.UNM Announce Option Agreement to License Novel Recombinant Antibody Technology 4Stem cells help researchers understand how schizophrenic brains function 2
... 16 Monogram,Biosciences, Inc. (Nasdaq: MGRM ) ... of the company,s HIV tropism assay were presented ... Drug Resistance Workshop,in Sitges, Spain. Trofile was introduced ... in class CCR5 antagonist, in,August 2007. Recent enhancements ...
... /PRNewswire-FirstCall/ - ProMetic Life Sciences Inc.,(TSX: PLI) ... compound in clinical trial in patients with ... the European Hematology Association,held in Copenhagen, Denmark ... Director R&D, Biology, presented data on,PBI-1402 in ...
... Inc. (Nasdaq: ALXN ) today announced that ... of Alexion,Pharmaceuticals, will present at the William Blair ... a.m., local time (10:10 a.m., eastern) on,Thursday, June ... Sinha,s remarks will be available live. You can,access ...
Cached Biology Technology:Sensitivity Enhancements to Monogram's Trofile(TM) Assay Demonstrate Improved Power to Select Patients for CCR5 Antagonist Therapy 2Sensitivity Enhancements to Monogram's Trofile(TM) Assay Demonstrate Improved Power to Select Patients for CCR5 Antagonist Therapy 3Sensitivity Enhancements to Monogram's Trofile(TM) Assay Demonstrate Improved Power to Select Patients for CCR5 Antagonist Therapy 4Sensitivity Enhancements to Monogram's Trofile(TM) Assay Demonstrate Improved Power to Select Patients for CCR5 Antagonist Therapy 5Sensitivity Enhancements to Monogram's Trofile(TM) Assay Demonstrate Improved Power to Select Patients for CCR5 Antagonist Therapy 6Positive clinical data for PBI-1402 presented at the Annual Congress of the European Hematology Association 2Positive clinical data for PBI-1402 presented at the Annual Congress of the European Hematology Association 3
...
... Lyophilized. Lyophilized from 2 mM sodium ... human liver. Cathepsin D is a major ... as a 52 kDa proenzyme. Overexpression of ... associated with higher risk of relapse and ...
... Grade Thrombin is a highly purified preparation ... with appropriate vectors. The preparation is functionally ... is free of detectable contaminating proteases. Prepared ... by certified tests to be negative for ...
Rat Hepatocytes (RH) (>3,000,000 cells)...
Biology Products: