Figure 1From: Positive selection in the adhesion domain of Mus sperm Adam genes through gene duplications and function-driven gene complex formationsSperm Adam molecular phylogeny supporting Adam sequence orthology. The WAG model of protein evolution with G, the gamma distribution shape parameter, and I, invariant sites, was selected for the phylogenetic reconstruction. The model was selected based on its likelihood and AIC (akaike information criterion) value (Additional file 1: Table S3).Back to article page