> Did the the different tribes of African Bushmen start out as genetically distinct as they are today, or did they start from a common population and diverge o

> Did the the different tribes of African Bushmen start out as genetically distinct as they are today, or did they start from a common population and diverge over the last 200,000 years? While groups like the San have a great deal of diversity within the group, they are also distinct from other Hunter Gatherer groups as well. The San are separated from the Hadza by about 110K years, IIRC. > Were those who left Africa always distinct from those who stayed, or did they change through selection (and interbreeding with Neanderthals and Denisovans) over time? Yes, those who left Africa were the remnants of a distinct population, separated from the ancestors of sub-Saharan Africans by 40K years when they left Africa 60Kya.