Fig. 7From: Inferring the number and position of changes in selective regime in a non-equilibrium mutation-selection frameworkEstimation of non-site-specific amino acid fitnesses from an empirical alignment of prokaryotic beta-lactamase sequences. Bars indicate the estimated fitness relative to the median amino acid fitness for each model. Values are shown for the root model and after each respective inferred shift for the full beta-lactamase tree and a reduced tree using only the ProteobacteriaBack to article page