[Pharmboy]

Yes...but you said above that Cavalli Sforza had the Melanesians the farthest away from the Africans. THAT doesn't seem to make sense if they are also old--they should be closest to the originals, the Africans.

[Varda]

Genetic distance is a measure of the dissimilarity of genetic material. The more dissimilar, the further away (in time) from the point of divergence. For this to work, you have to believe that there is a constant rate of mutation that can be translated into time.