Genomic Evidence for Island Population Conversion Resolves Conflicting Theories of Polar Bear Evolution (original) (raw)
Figure 3
Summary of D-statistic comparisons between polar bears and brown bears.
In each comparison, the black bear was used to define the ancestral allele. The Z-score of the D-statistic for each comparison is shown for autosomes (red) and X-chromosome (blue). Each dot represents the data from comparison of one pair of bears. In the top panel, all pairs of polar bears are compared for excess derived allele matching against the mainland brown bear. In the middle panel, all pairs of polar bears are compared against the ABC Island brown bear. The bottom panel shows the comparison of the two brown bears for excess allele matching to polar bears with each dot representing a different polar bear.