Fig. 4From: Chlamydia pan-genomic analysis reveals balance between host adaptation and selective pressure to genome reductionNonsynonymous to synonymous substitutions ratio (dN/dS) as dependent on the number of species that have representatives of an Orthologous Group (OG). Multiple substitutions per site are allowed (the Jukes-Cantor distance correction). The difference between medians is estimated with the nonparametric Mann-Whitney U test with the Bonferroni correction for multiple testingBack to article page