Ancient population structure

Ancient population structure refers to how early human groups were organized and distributed across different regions. Instead of a single, widespread population, humans existed in smaller, semi-isolated groups with limited interaction. Over time, these groups developed unique traits, but some interbreeding kept them connected. This structure affects genetic diversity today, showing how populations were fragmented yet related, shaping human evolution and migration patterns. Essentially, ancient population structure helps us understand how early humans spread, adapted, and remained connected despite geographical barriers.