Fig. 21 in The Amphibian Tree Of Life

Fig. 21. Bayesian tree of anuran exemplars of Biju and Bossuyt (2003), with particular reference to Neobatrachia. Underlying data are two mtDNA fragments, covering part of 12S rRNA, complete t­ RNAVal, and part of 16S rRNA. In addition, one fragment of the nuclear genome: exon 1 of rhodopsin, single exon of RAG­1, and exon 2 of CXCR­4, for a total of 2,325 bp of sequence. Alignment was made using Clustal X (Thompson et al., 1997), alignment costs not disclosed, with ambiguous sections excluded and gaps excluded as evidence. Model of nucleotide substitution assumed for analysis was GTR 1 G1 I.