Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of observed and simulated results. Histograms show the distributions of standard deviations (SDs) of the branch-specific amounts of evolutionary change across the hominin phylogeny obtained in 1,000 constant-rate simulations. P values are calculated as the proportion of constant-rate simulations yielding a higher SD than the observed SD for each trait (solid vertical lines).
