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.