4+ hour, 9+ min ago (184+ words) "Prior to this study, the leading science seemed to suggest that in order for a dog to be a dog, there can't be very much wolf DNA present, if any," Lin said. "But we found if you look very closely in modern dog genomes, wolf is there. This suggests that dog genomes can tolerate wolf DNA up to an unknown level and still remain the dogs we know and love." In this study, the researchers assessed over 2,700 genomes in databases maintained by National Center for Biotechnology Information and the European Nucleotide Archive. This data included DNA from wolves, breed dogs, village dogs, and other types of canids, and spanned DNA samples that are as much as 20,000 years old, to modern samples. The work showed that about two-thirds of breed dogs have detectable wolf ancestry in their genomes from hybridization events…...