Fig. 2From: Multiplicity of Buc copies in Atlantic salmon contrasts with loss of the germ cell determinant in primates, rodents and axolotlUnrooted phylogenetic tree of tetrapod Buc proteins and teleost Buc and BucL (−like) paralogs. The tree was generated using the ML method based on the JTT model. To evaluate the topological stability 100 bootstrap resamplings were made. All branches with less than 30 bootstrap confidence values were collapsed. Accession numbers are given in Additional file 3: Table S1Back to article page