Fig. 2.

Relationship with west Eurasia is shared by all Khoisan populations. We generated weighted LD decay curves in each Khoisan (or central African hunter–gatherer) population, using weights computed using the test population as one reference and either the French or the Yoruba as the other reference. We then fit an exponential decay model to each LD curve. Plotted are the inferred (A) amplitudes and (B) admixture times in each population. Larger amplitudes indicate a closer relationship to the true admixing population, and under a model of a single admixture event the admixture times do not depend on the reference populations used.