Dogs And There Origins.Reference From Darren Naish: Tetrapod Zoology
Dogs were first domesticated from wolves at least 12,000 years ago. In this time, the dog has developed into hundreds of breeds with a great degree of variation. For example, heights at the small range from just a few inches (such as the Chihuahua) to roughly three feet (such as the Irish Wolfhound), and colors range from white to black, with reds, grays, and browns occurring in a tremendous variation of patterns. Two genetic studies have just rewritten the history of humanity's best friend. The new version has moved the origins of the domestic dog from the Middle East to East Asia and argues that the first people to venture into the Americas brought their dogs with them. However, because mitochondrial DNA is maternally inherited, interbreeding between female dogs and male coyotes or jackals would not be detected. Therefore, a more limited study of nuclear DNA was also carried out. This also supported the conclusion that the wolf was the ancestor of the domestic dog.
Are domestic dogs really wolves?
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