TABLE 4.

Polymorphic sites within M and S forms, the number of divergent sites between An. gambiae and An. arabiensis, and the ratio of polymorphic-to-divergent sites

	D31	D27	D59	D52	D61	D64
M polymorphisms	39	20	8	4	4	9
M divergent sites	33.1	18.5	18.5	11.9	8.7	7.0
M polymorphism/divergent	1.18	1.08	0.43	0.34	0.46	1.29
S polymorphisms	43	16	13	4	2	1
S divergent sites	32.5	17.0	18.5	12.5	8.5	7.1
S polymorphism/divergent	1.32	0.94	0.70	0.32	0.24	0.14

Sample sizes were as follows: M form of An. gambiae: 13; S form of An. gambiae: 14; An. arabiensis: 3.