A comparison between the distributions of the KD-values calculated in silico using ancestral and minor alleles of the Arabidopsis SNPs. Legend: χ2 and D, the scores of Pearson’s chi-square test and Kolmogorov–Smirnov’s test for assessing the difference between two distributions, respectively; t and Z, the scores of Student’s t-test and Fisher’s Z-test for comparing the difference between two estimates of arithmetic means, respectively; F, Fisher’s F-test for comparing the difference between two estimates of the standard deviation; PADJ, statistical significance level with the Bonferroni correction for multiple comparisons calculated using STATISTICA version 10.0 (StatsoftTM, Tulsa, OK, USA).