Phylogeny of the VWD and MAM domains of zonadhesin and zonadhesin-like genes. A) Human and puffer fish zonadhesin VWDs were aligned with the VWD domains of salmon and zebrafish Zlgs and chicken FCGBP-like protein. A neighbor-joining tree utilized 140 informative sites. B) Phylogeny of the MAM domains from puffer fish, zebrafish, pig, mouse and human ZANs, salmon and zebrafish Zlg and chicken FCGBP-like proteins are shown with a neighbor-joining tree. This phylogeny utilized 88 informative sites. Both phylogenies used gap-free alignments and a Poisson substitution correction model. Consensus trees based on 1000 pseudo-replicates are reported with the bootstrap support values indicated above the respective nodes. The scale is given in amino acid substitutions per site.