Table 2.

Phenotype frequencies of Knops blood group polymorphism in various ethnic groups (Moulds et al., 2000).

	Kn(a + )	McC(a + )	McC(b + )	Sl(a−)
European-Americans	0.98	0.98	0.01	0.01
African-Americans	0.99	0.90	0.44	0.39
Malians (Malaria endemic)	1.00	0.89	0.49	0.70