Phylogenetic analysis of zebrafish protein sequences for (A) vn–cadherin and (B) BMP2a and BMP2b. CLUSTALX was used to display the relationships of zebrafish gene products and their homologs in other organisms, as described in the text. Numbers at nodes represent bootstrap support for 1000 replications. NCBI protein sequence ID numbers for the proteins shown are human cad6 (1705545), chicken cad6 (2134302), frog cad11 (3377485), chicken cad11 (3511021), mouse cad11 (1705549), human cad11 (1377894), zebrafish vn-cad (1345125), human cad8 (1705547), mouse cad8 (3023433), rat cad8 (2804294), fly Dpp (118409), chicken BMP2 (2501173), mouse BMP2 (1345611), human BMP2 (115068), frog BMP2 (115070), zebrafish BMP2b (2804175), zebrafish BMP2a (2149148), zebrafish BMP4 (2804177), frog BMP4 (399122, chicken BMP4 (2501175), human BMP4 (115073), and mouse BMP4 (461633).
