Figure 6.

Average pairwise percent identities of milk and mammary genes across mammals. The distribution of average amino acid pairwise PID of amino acid sequences across the seven taxa - human, mouse, rat, bovine, dog, opossum, and platypus - is plotted for those genes in the virgin, pregnancy, lactation, involution, and mastitis mammary gene sets, the milk protein gene set, and all bovine consensus genes. Only genes with a single copy in each of the seven genomes were used for the analysis. Milk and mammary genes are more conserved across mammals than other genes in the genome.