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Phylogenetic position of the protostome and deuterostome genomes analysed. Simplified phylogeny of the metazoan evolution based on molecular data indicating the positions of protostome (nematodes and arthropods) and deuterostome (tunicate and vertebrate) genomes analysed (adapted from Giribet., 2002 [79]; Gerhart et al., 2005 [80; Delsuc et al., 2006 [81).
