Fig 1.
Geographical Locations of the 15 Indigenous Tibetan Sheep Populations Sampled from the Qinghai-Tibetan Plateau Area.
The black area in the inset indicates the Qinghai-Tibetan Plateau area; the black triangles indicate the sampling sites within the plateau area (enlarged). The sampling locations of the specific populations are shown in Table 1.
Table 1.
Sampling information for the 15 indigenous Tibetan sheep populations.
Table 2.
Genetic diversity indices of fifteen Tibetan sheep populations.
Table 3.
Genetic distance (above the diagonals) and average number of nucleotide differences (below the diagonals) between and within fifteen Tibetan sheep populations.
Table 4.
Estimates of pairwise FST values (above the diagonals) and GST values (below the diagonals) between fifteen Tibetan sheep populations.
Fig 2.
A Neighbor-joining Phylogenetic Tree of the 21 Populations based on 642 Sequences of mtDNA D-loop.
The distances were computed using the Maximum Composite Likelihood method and are in the units of the number of base substitutions per site.
Fig 3.
The ME phylogenetic tree of 350 haplotypes.
The ME phylogenetic tree show that the 350 haplotypes and 636 sequences of Tibetan sheep populations and six reference breeds fall into five distinct clusters: haplogroup A, haplogroup B, haplogroup C, haplogroup D (Hap 259 of LZ 03) and haplogroup E (Omusimon and Ovignei), respectively. Haplogroups for individuals defined by the entire haplotypes are shaded in blue (haplogroup A), green (haplogroup B), and red (haplogroup C).
Fig 4.
The Mismatch Distribution of Complete Dataset of Four Lineages of the Fifteen Tibetan Sheep Populations.
The results were summarized in four lineages of the mtDNA types of the fifteen Tibetan sheep populations on the Qinghai-Tibetan Plateau areas showed that there was at least one demographic expansion.