An article published in the journal “Science Advances” reports a genetic research that offers evidence that some West African populations inherited a portion of their genes from an unknown species of hominins. Arun Durvasula and Sriram Sankararaman of UCLA made a genetic comparison of the DNA of 405 African individuals with those available obtained from Neanderthal and Denisovan bones, discovering genetic characteristics that can be attributed to a species other than these.