Additional file 2.

LWS and SWS2 Maximum Parsimony phylogenies. MP trees for LWS (left) and SWS2 (right) genes, constructed from sequences and alignments used for NJ trees in Figs. 3 and 4. Gene sequences for Xenopus tropicalis SWS2 and LWS genes were used as outgroups. Within the tree, values from 1000 bootstrap reiterations are labelled at the nodes, and species and gene names are labelled at each of the tips.

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Watson et al. BMC Evolutionary Biology 2010 10:87   doi:10.1186/1471-2148-10-87