DNA analysis taken from burial grounds suggests early farmers migrated into Europe with plants and domesticated animals and replaced Stone Age hunter-gatherers, geneticist Mark Thomas of University College London said in a release Friday.
There is little evidence of a genetic link between the hunter-gatherers and the early farmers, said Thomas, who worked with researchers at Germany's Mainz University.
Humans arrived in Europe 45,000 years ago and replaced Neanderthals. From then on, European hunter-gatherers experienced enormous climate change, including the last Ice Age.
The hunter-gatherer lifestyle survived 2,000 years after the Ice Age and ended 11,000 years ago, but gradually was replaced by agriculture, without a genetic exchange between hunter-gatherers and farmers, Thomas said.