Dogs are our loyal companions who share our environment, food, and even some diseases. Yet, purebred dogs represent only a quarter of the approximately 1 billion dogs worldwide. Where do they come from, and how did they evolve from their wild wolf ancestors? Jacques and Irene visit Adam Boyko, whose team at Cornell University has collected genetic samples from village dogs in 38 countries. Surprisingly, village dogs did not originate from purebred dogs. Find out how these studies offer clues about ways dog genetics can be used to improve dog health and even human health. Subscribe to Illumina: http://bit.ly/IlluminaYouTube Links: Adam Boyko at Cornell University College of Veterinary Medicine http://www.k9dna.org/ Cornell University College of Veterinary Medicine http://www.vet.cornell.edu/ For more info on applications in canine genetics: http://www.illumina.com/products/caninehd_whole_genome_genotyping.html For more info on applications in other areas http://www.illumina.com/science.html See all our Adventures in Genomics videos: https://www.youtube.com/playlist?list=PLKRu7cmBQlah8wHBByBXEO0dNW-xNvvX_