@article{MAKHILLJAVA20076121669,
    title = {Molecular Phylogeny and Taxonomic Status of Domestic Yak Inferred from Cytochrome B Gene Partial Sequences},
    journal = {Journal of Animal and Veterinary Advances},
    volume = {6},
    number = {12},
    pages = {1495-1499},
    year = {2007},
    issn = {1680-5593},
    doi = {javaa.2007.1495.1499},
    url = {https://makhillpublications.co/view-article.php?issn=1680-5593&doi=javaa.2007.1495.1499},
    author = {S.P. Li,H. Chang,G.M. Song,G.L. Ma,H.Y. Chen,D.J. Ji and},
    keywords = {Domestic yak (Bos grunniens),cytochrome b gene,molecular phylogeny,taxonomic status},
    abstract = {The domestic yak (<I>Bos grunniens</I>) is the most important domesticated bovine species in the Qinghai-Tibetan Plateau. In the present study, the cytochrome b (<I>Cyt b</I>) gene partial sequences (540 bp) of 27 domestic yaks (20 sequences determined in our study and 7 sequences cited in GenBank) were analyzed. Combined with the homologous fragments of other bovine <I>Cyt b</I> sequences in GenBank, the phylogenetic trees of Bovinae were reconstructed by Neighbor-Joining (NJ) methods with <I>Ovis aries</I> as outgroup. Sequence analysis showed that, among 540 sites compared for 27 domestic yaks, 9 variable sites (1.67% of 540 sites) and 5 different haplotypes were observed, showing very low mitochondrial genetic diversity in domestic yaks. The sequence divergence and divergence time between yak (<I>Bos grunniens</I>/<I>Bos mutus</I>) and American bison were 3.33% and 1.48-1.85 million years, respectively, lower and shorter than those between yak and genus Bos (<I>Bos taurus</I>/<I>Bos indicus</I>). Phylogenetic analysis showed that yak and American bison close clustered into one embranchment, while <I>Bos taurus</I> and <I>Bos indicus</I> independently clustered into another embranchment. Our results supported that the domestic yak was domesticated from a primitive yak different from the present wild yak and the yak should be classified as an independent genus Poephagus in Bovinae.}
    }