mtDNA data indicate a single origin for dogs south of Yangtze River, less than 16,300 years ago, from numerous wolves.
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Mol Biol Evol. 2009 Dec;26(12):2849-64. doi: 10.1093/molbev/msp195. Epub 2009 Sep 1.
Mol Biol Evol. 2009.
PMID: 19723671
Free PMC article.