Figure 2.

Unrooted maximum likelihood (ML) phylogenetic trees obtained from the transcription and translation datasets. (a) Transcription; (b) translation. The best tree and the branch lengths were calculated using the program PUZZLE with a Γ-law correction. Numbers at the nodes are ML bootstrap supports computed with the RELL method using the MOLPHY program without correction for among-site variation. The scale bars represent the number of changes per position per unit branch length.