[jimmygrace]

So easy even a caveman can do it.

[FrdmLvr]

ROTFL!

[BenLurkin]

Haplogroup D may have originated from a lineage separated from modern humans approximately 1.1 million years ago and later introgressed into humans. This finding supports the possibility of admixture between modern humans and extinct Homo spp.[10] While Neanderthals have been suggested as the possible source of this haplotype, the haplotype was not found in the individuals used to prepare the first draft of the Neanderthal genome.[13][14]

http://en.wikipedia.org/wiki/Microcephalin