Extended Data Figure 9: Null distributions of D for an assumed Tibet–Han divergence of 3,000 years.
From: Altitude adaptation in Tibetans caused by introgression of Denisovan-like DNA
Each histogram corresponds to the D values obtained under null models without gene flow, and the red vertical bar corresponds to the D values observed in the real data. The observed D values are significant (P < 0.001) even when we assume Tibet–Han divergence of 5,000 or 10,000 years (see Methods and Supplementary Tables 8–10) (model abbreviations are given in the Supplementary Information; section on D statistics under models of no gene flow).
