Fig. 9
From: Detecting amino acid preference shifts with codon-level mutation-selection mixture models
Allocation probability logoplots in avian (red) and human (blue) strains of Influenza PB2. Purple indicates overlapping profile allocation in both clades. At top is a strongly identified non-shift with a PIP of 0.865. At middle is a strongly identified shift, with a PIP of 0.00. At bottom, the low PIP of 0.115 does not indicate a preference shift, as site is weakly allocated to a number of profiles in both clades