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. Author manuscript; available in PMC: 2020 Feb 4.
Published in final edited form as: Curr Biol. 2019 Jan 24;29(3):530–537.e6. doi: 10.1016/j.cub.2018.12.044

Figure 2. Genomic Variation is Associated with Sculpin Presence/Absence:

Figure 2

Separation of stickleback from lakes with and without sculpin along the first principal component of whole genome SNP variation. (A) First principal component values based on all seventeen lake populations (gPC1). (B) First principal component values based on an analysis that also includes marine (ancestral) stickleback sampled at six localities (gPC1). Each point represents a single individual from a population. Stickleback from lakes with sculpin resemble marine stickleback more closely than do stickleback from sculpin-absent lakes. The percent of SNP variation explained by each first principal component is shown in parentheses. (C) Comparison of the first principal component of all SNPs in all lake populations (gPC1LAKE) with the first linear discriminant axis of body shape (Body Shape Axis 1). Greater phenotypic differentiation both between lake types and within lake types is associated with more extreme genotypic differentiation along gPC1LAKE. See Figures S2 and S3.