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.
Each data point provides the mean ±1 standard deviation of 20 unique simulated populations. Black symbols represent data collected from populations with unbiased cultural transmission and white symbols data collected from populations with conformist cultural transmission.
