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phenotypic differences. (A) Shell shape by sample site for aperture width (mm) versus spire height (mm) for each lake. (B) Regression analysis of slope and intercept for each lake site showing the relationship between snail spire height and snail aperture width. (C) Comparison between lakes, including geographic distance, age of invasion difference, DMR numbers for combination of cDNA DMR and de novo DMR, and SMA analysis
