Fig. 2From: Genome-wide patterns of differentiation within and among U.S. commercial honey bee stocksPrincipal component analysis of allele frequencies by principal components (PC) and k-nearest neighbor (KNN) analysis of the eight sequenced honey bee stocks demonstrating the distribution of genetic relatedness. PC 1 and 2 (a); PC 2 and 3 (b), PC 1 and 3 (c), and KNN (d)Back to article page