Figure 1

Phylogenetic analysis. (A) Phylogenetic analysis of S. kowalevskii Fox genes: The S. kowalevskii Fox proteins group into their predicted families with high support values. Displayed is the Bayesian tree (standard deviation = 0.0109) with Bayesian posterior probabilities values on top of each branch and maximum likelihood values underneath each branch. Stars indicate a different tree topology result from the maximum likelihood analysis which lead to no support value at that position. Branches with posterior probabilities below 50% are collapsed. For gene accession numbers, gene predictions, and alignment see Additional file 1: Table S1, Additional file 2: Table S2, Additional file 3: Table S3 and Additional file 4: Table S4. (B) Phylogenetic analysis of the FoxQ2 family. Phylogenetic analysis of FoxQ2 proteins containing an EH-I-like motif (see Additional file 5: Table S5) result in a tree topology supporting a duplication of the FoxQ2 family at the base of the bilaterians. Displayed is the Bayesian tree (standard deviation = 0.023) with Bayesian posterior probabilities values on top of each branch and maximum likelihood values underneath each branch. Stars indicate different tree topologies which lead to no support value at that position. Branches with posterior probabilities below 50% are condensed. Proteins with a C-terminal EH-I-like motif are highlighted in blue. Proteins with a N-terminal EH-I-like motif are highlighted in yellow. Proteins with a N-terminal and a C-terminal EH-I-like motif are highlighted in yellow and blue. For gene accession numbers, identification of the EH-like motif, and alignment see Additional file 1: Table S1, Additional file 2: Table S2, Additional file 3: Table S3, Additional file 4: Table S4, Additional file 5: Table S5 and Additional file 6: Table S6.