Distance Phylogenetic Trees of Mammals

<div><p>(A) The phylogenetic tree of the mammals is shown here with branch lengths obtained using different distance criteria shown in the tables: PAM distance (P), CodonPAM (CP), SynPAM (SP), and dS (dS). The branch lengths shown are proportional to PAM distance, and the circle indicates the placement of the root.</p><p>(B) The phylogenetic tree of the mammals constructed using signed (S) and unsigned (U) reversal distance, with branch lengths proportional to the number of signed reversals.</p>