American researchers have proposed a method of detecting DNA of modern humans genes of other species of hominids for which you do not need to know the genome of the “intruder”, reported in Science Advances. This allows you to look for traces of hybridization of Homo sapiens with the species whose genome is still not deciphered, and even with such tangible evidence of life (bones, tools) have not yet discovered. Scientists report that they have found signs of the crossing of the ancestors of modern West African peoples and a hypothetical population of unknown hominids.
It is now known that the ancestors of modern humans interbred with at least Neanderthals and denisovans (although some consider them a subspecies of sapiens or Heidelberg man). Two of these species, in turn, engage in sexual relations with each other. It is logical to assume that members of the genus Homo the species formed pairs with someone else. But if the DNA of Homo sapiens, Neanderthals and denisovans still possible to extract from the remains, the genetic material of more ancient hominids is more difficult to obtain.
To circumvent this problem, geneticists Durvasula Arun (Arun Durvasula) and of Sankararaman Sriram (Sriram Sankararaman) University of California, Los Angeles have developed a method of finding genes of other species into human DNA, which does not need to compare the genome of someone looking for “alien” genes to the genome, from whom he received these genes.