Additional file 3: of Expression of Hox, Cdx, and Six3/6 genes in the hoplonemertean Pantinonemertes californiensis offers insight into the evolution of maximally indirect development in the phylum Nemertea

Bayesian phylogenetic analysis including P. californiensis and M. alaskensis Six family genes. Mm; Mus musculus (Chrodata), Ct; Capitella teleta (Annelida), Dm; Drosophila melanogaster (Arthropoda), Sk; Saccoglossus kowalevskii (Hemichordata), Sp; Strongylocentrotus purpuratus (Echinodermata), Nv; Nematostella vectensis (Annelida), Tt; Terebratalia transversa (Brachiopoda), Pd; Platynereis dumerilii (Annelida), Pc; Pantinonemertes californiensis (Nemertea), Ma; Micrura alaskensis (Nemertea), Lg; Lottia gigantea (Mollusca). Numbers above clades indicate Bayesian posterior probabilities higher than 50%. Arrowheads indicate nemertean Six3/6 genes isolated by us. Scale bar, 0.2 nucleotide substitutions/site