Health & Medicine Week
Welcome to NewsRx!
Learn more about a six-week, no-risk free trial of Health & Medicine Week
We're a pay-per-view site for premium content. If you'd like to purchase this article, it's only $3.00.
Anthropology
New World founded by surprisingly small population
June 13th, 2005
About 14,000 years ago - a few hundred thousand years after our putative modern forebears spread out from Africa - descendants of archaic humans crossed the Bering land bridge from Siberia to North America. Several lines of evidence support this model, but that's where the consensus ends and the details are hotly debated. In a paper published in PLoS Biology, Jody Hey now reveals how the sizes of the first New World populations have changed since they were founded. His new approach shows that the New World was colonized by a surprisingly small population with an effective size of only about 70 individuals (those individuals likely to contribute genes to the next...
Source: Health & Medicine Week (2005-06-13)
|
