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. 2016 Feb 20;17:123. doi: 10.1186/s12864-016-2441-8

Fig. 5.

Fig. 5

Effect of sample size on the McDonlad and Kreitman test based statistics. a Correlation between Neutrality Index and the number of exomes used to estimate this measure. b The proportion of adaptive nonsynonymous substitution estimated using different sample sizes. Both the relationships were statistically significant at the 1 % level