Table 1.

Number of genes under for positive selection in the seven lineages and number of positive genes in OMIM

Lineage	n	m	p value
Human	54	8	0.5919
Chimpanzee	162	26	0.4190
Hominid	56	13	0.0753
Mouse	65	11	0.4032
Rat	89	18	0.1242
Murid	81	21	0.0087*
Dog	97	21	0.0577
All	511	99	0.0067*

Number of genes under positive selection at p < 0.05 (n); Number of genes under positive selection in OMIM (m) and p value from a binomial test to look for over-representation of PSGs within OMIM.

* p < 0.01