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Abstract
To contribute to the complete mitogenome database of the species Canis lupus familiaris and shed more light on its origin, we have sequenced mitochondrial genomes of 120 modern dogs from worldwide populations. Together with all the previously published mitogenome sequences of acceptable quality, we have reconstructed a global phylogenetic tree of 555 C. l. familiaris mitogenomes and standardized haplogroup nomenclature. The phylogenetic tree presented here and available online at http://clf.mtdna.tree.cm.umk.pl/ could be further used by forensic and evolutionary geneticists as well cynologists, for data quality control and unambiguous haplogroup classification. Our in-depth phylogeographic analysis of all C. l. familiaris mitogenomes confirmed that domestic dogs may have originated in East Asia during the Mesolithic and Upper Paleolithic time periods and started to expand to other parts of the world during Neolithic times.
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