Previously documented migrations of West African
farmers to East Africa
around 2,000 years ago, and then to southern Africa
around 1,500 years ago, reshaped Africans» genetics — and obscured
ancient ancestry patterns — more than has been known, the researchers report online September 28 in Science.
Ancient DNA from foragers and
farmers in eastern, central and western Europe indicates that they increasingly mated with each other from
around 8,000 to nearly 4,000 years ago, a team led by geneticist Mark Lipson of Harvard Medical School in Boston reports online November 8 in Nature.