Reconstruction of MC1R evolution over an independent molecular phylogeny of swans and geese. A maximum likelihood tree of swans and geese using CytB and LDH B data. Amino acid substitutions at important functional sites in MC1R are shown in red, all other substitutions are shown in black. Numbers above branches are bootstrap support values from 100 replicates. Numbers below branches are the posterior support probabilities from Bayesian analysis. Anas platyrhynchos sequences were obtained from GenBank; Accession numbers EU009397 (CytB) and X68810 (LDH B).