Figure 2. The species tree of 23 mammals with Old World fruit bats specific amino acid replacements were highlighted by ancestral sequence reconstruction using maximum parsimony method.

(a) A164S, (b) V386I. Branch lengths are not drawn to scale. The amino acids at positions 164 (A: Ala; S: Ser) and 386 (V: Val; I: Ile) of Slc2a4 for each interior and exterior node are shown.