Table 2 Summary of Bayes factor tests showing the effect of changing substitution model components. Entries are twice the log of the Bayes factor in the comparison between models M_{1} and M_{2} (2logB_{12}). The row models are arbitrarily labeled M_{1}; thus, positive values indicate support for the column model over the row model. A dash (-) indicates which partitions that have linked topology parameters. Asterisks (*) indicate models where the rates are assumed to be equal.