Schematic representation of the cattle mtDNA phylogeny.

<p>This tree highlights the founding haplotypes that most likely were involved in the domestication process. Approximate ages (ky) can be inferred from the scale. Some correspond to the ML ages in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141170#pone.0141170.t001" target="_blank">Table 1</a>, those for haplogroups R and I are from [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141170#pone.0141170.ref023" target="_blank">23</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141170#pone.0141170.ref024" target="_blank">24</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141170#pone.0141170.ref027" target="_blank">27</a>], while those for the probably extinct haplotypes E and C correspond to the radiocarbon dates of the specimens in which they have been found [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141170#pone.0141170.ref014" target="_blank">14</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0141170#pone.0141170.ref031" target="_blank">31</a>]. A dotted line is shown in T3 and Q1 to indicate that other not yet identified founder sub-haplogroups are likely for these two haplogroups.