Trois "tribus" sont à l'origine des Européens
BBC NewsThe modern European gene pool was formed when three ancient populations mixed within the last 7,000 years, Nature journal reports.
Blue-eyed, swarthy hunters mingled with brown-eyed, pale skinned farmers as the latter swept into Europe from the Near East.
But another, mysterious population with Siberian affinities also contributed to the genetic landscape of the continent.