February 13, 2008
The Beringian Population and the New World
According to DNA studies carried out by the University of Florida Genetics Institute scientists of New World DNA, people from Asia moved into Beringia, the land mass that appeared connecting Siberia to Alaska when sea levels fell, but were blocked from entering the new World by two large glaciers. People lived for 20,000 years in Beringia until about 15,000 years ago when the glaciers melted and people could move from Beringia to the new world. Mutations and genetic patterns began to accumulate in the Beringia population during those 20,000 years that show up in most New World indigenous populations today. In the earlier article, it was revealed that the geneticists sampled DNA from thousands of present day indigenous people in 29 groups across Canada, Mexico, Central and South America to arrive at their conclusions. In the earlier article, it was mentioned that the study excludes Native Americans and Eastern Brazilians. The authors of the report promise to address genetic findings there later.
The theories of an arrival by people following a coastal route up to 40,000 years ago now have the challenge of finding countervailing DNA evidence to prove their case or compelling archaeological evidence that would prove the earlier arrival.
Science Daily has the story here;