Living Evidence
By DANIEL WEISS
Monday, October 16, 2017
In recent years, scientists have determined that early humans interbred with other hominin species, such as Neanderthals and Denisovans, by comparing the genomes of present-day humans with DNA taken from hominin fossils. Now, however, evidence of interbreeding has been found based on analysis of human genomes drawn from people currently living around the world. Specifically, researchers have focused on a gene called MUC7, which codes for a protein found in saliva.
https://www.archaeology.org/issues/275-1711/from-the-trenches/6009-trenches-africa-hominin-interbreeding