"and bolsters the notion that Homo sapiens evolved from different populations"

Presumably that means 'different populations' of Homo sapiens, and not a genetic convergence of earlier species.

The different races have a common ancestor back there somewhere. Yet there are experts who seem to think that evolution had to stop when H. sapiens turned up. I imagine that must make it very difficult to account for those many regional differences in modern humans.

"Time is what prevents everything from happening at once" - John Wheeler