Figure 5From: Divergent evolution and purifying selection of the flaA gene sequences in AeromonasDistribution of the posterior means of the ω ratio. Posterior means of ω ratio under the M8 (beta & ω) model. In this model 10 equal-probability categories are used to approximate the beta distribution [27], giving 11 categories. The ordinate represents the average of ω over the 11 site classes, weighted by the posterior probabilities [30].Back to article page