Figure 3.

ANTP HoxL class gene inter-relationships. Bayesian phylogenetic tree of ANTP HoxL class genes from sequenced xiphosuran species, along with the previously described complements of other chelicerates, amphioxus Branchiostoma floridae, human Homo sapiens and beetle Tribolium castaneum. Phylogenies inferred with the Jones model and 55 informative sites. Numbers at base of nodes represent posterior probability to two significant figures. Trees shown are the result of Bayesian analysis, run for 10 000 000 generations, and analyses run until the s.d. of split frequencies was below 0.01, with the first 25% of sampled trees discarded as ‘burn-in'. All sequences and alignments detailed in Supplementary File 1. Shading shows major gene families. Coloured dots aid in identification of species, with green circles for T. tridentatus, black diamonds for L. polyphemus and red asterisks for C. rotundicauda. Scale bar represents substitutions per site at given distances. Rooted using Pitx and Six 3/6 sequence outgroups.