Figure S1. A phylogeny of African lineages used the Altai Neandertal as outgroup constructed using Treemix allowing for six migration events. Figure S2. Principal component analysis of 44 African and 32 west Eurasian populations using principal component analysis. Figure S3. ADMIXTURE analysis of 92 African and 62 West Eurasian individuals from KÂ =â2 to 10. Figure S4. Effective population size of African Khoesan-speaking populations. (PDF 414 kb)