Figure 1From: Methods for selecting fixed-effect models for heterogeneous codon evolution, with comments on their application to gene and genome dataRelationships among fixed-effect codon models. The most complex model (FE1) is located at the top and a completely homogenous model (FE16) is located at the bottom. Parameters heterogeneous among partitions for a given model are shown after the model name. Lines between models indicate "1-step" differences in complexity among the models.Back to article page