FIGURE 1-26 Evolutionary tree connecting monkeys, apes, and humans. The evolutionary tree of humans, great apes, a small ape, and an Old World monkey was estimated from the divergence among their genomic DNA sequences. Whole-genome DNA sequences were aligned, and the average nucleotide divergence in unique DNA sequences was estimated. Estimates of the times the different species diverged from each other, indicated at each node, were calculated in millions of years (Myr) based on DNA sequence identity; ~1 Myr implies approximately 1 Myr or less.

[Data from D. P. Locke et al., 2011, Nature 469:529–533.]