Box Plot from Scientific Research

Box and whisker plot showing the distribution of nonsynonymous to synonymous substitution ratios ( K a/ K s) in two subgenomes of P. giganteum and P. purpureum. The upper and lower vertical extending lines denote the most extreme values within 1.5 interquartile range of the 75th and 25th percentile of each group, respectively. The dots above the upper line denote the outliers. The number of gene pairs used for K a/ K s calculation was listed below the boxplot for each subgenome. Statistical significance was determined using two-sided Wilcoxon rank-sum test

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