In prehistoric interbreeding, it was Neanderthal men and Homo sapiens women

When Homo sapiens trekked out of Africa, our species encountered Neanderthal populations already inhabiting the vast expanses of Europe, Asia and the Middle East. As the presence of Neanderthal DNA in most present-day people shows, interbreeding occurred, though the circumstances have remained unclear. New research focusing on the X chromosome, one of the two sex […]