Phylogenetic characterization of four Botryllus schlosseri Wnt genes. Bayesian consensus tree of Wnt amino acid sequences constructed as described in the ‘Methods’ section. B. schlosseri genes considered are highlighted in bold red whereas clusters with other orthologues are colored (wnt7 = orange; wnt5A = green; wnt2B = yellow; wnt9A = blue). The tree has been rooted on its midpoint, percentage of posterior probability is showed at every node. Amphi: Branchiostoma floridae, Che: Clytia haemispherica, MM: Mus musculus, Pdu: Platynereis dumerilii, Ame: Apis mellifera, Nv: Nemastostella vectensis, Hv: Hydra vulgaris, Ci Ciona intestinalis, Bs: Botryllus schlosseri.