Table 3.

McDonald-Kreitman test comparing levels of human polymorphism and divergence between human and chimpanzee at conserved versus non-conserved sites across distantly related mammals.

	Non-conserveda	Conserved
Rare polymorphic sites
Fixed	19	5
Polymorphicb	11	4
Common polymorphic sites
Fixed	19	5
Polymorphic	1	4

^a If the allele in chimpanzee (ancestral) was identical to that found in the same position in rodent, artiodactyl and carnivore, the site was considered conserved across three lineages.

^b The singleton indel was not included in this analysis.