3.3.3 Admixture
The NGSADMIX analysis reaffirmed that many samples (Fig. 2E) from the NA show evidence of admixture. The Antarctic sample clustered with the NWA when two ancestral populations were considered (k=2), which was also observed in the mitochondrial network analysis. The analysis with k=3 populations indicated that many of the NA blue whales have mixed ancestry. The k=3 analysis suggested that all of the blue whale historical samples had a common ancestry, which can be a possible effect of post-mortem damage not corrected despite application of methods to remove deaminated sites.