Scientists have analyzed 161 breeds of dog's DNA. Over the past 20 years, dogs have been bred to do different things, depending on what they are needed for. Dogs used to be used for hunting and gathering, now there are many hybrid breeds that are available. Dogs origins can be traced to two basic places in the world the United Kingdom or the Mediterranean. Many dogs like the mastiff has not changed genetically over the years. This article was very interesting to read. Dogs are very important in the world and majority of people have them. Now with all these different dog breeds breeding together, this genetic mapping of them will allow us to better understand what dogs are good for what area.
Related Article: http://genome.cshlp.org/content/19/3/500.short