Fig. 3From: Inferring the number and position of changes in selective regime in a non-equilibrium mutation-selection frameworkRelationship between node age and the ability to infer selective shifts in simulated codon sequence data evolving under a non-equilibrium mutation-selection model. The timescale is in expected synonymous substitutions per site. False negatives occur only when the shift is very recent, while false positives (in addition to the correct branch) are most often returned when the shift is near the base of the treeBack to article page