Type	Fitness Relation	Form of Selection	Result
1	W11 = W12 > W22	Directional selection against recessive allele A2	A1 increases, A2 decreases
2	W11 = W12 < W22	Directional selection against dominant allele A1	A2 increases, A1 decreases
3	W11 > W12 > W22	Directional selection against incompletely dominant allele A2	A1 increases, A2 decreases
4	W11 < W12 < W22	Directional selection against incompletely dominant allele A1	A2 increases, A1 decreases
5	W11 < W12 > W22	Overdominance	Stable equilibrium, both alleles maintained
6	W11 > W12 < W22	Underdominance	Unstable equilibrium
Note: W11, W12, and W22 represent the fitnesses of genotypes A1A1, A1A2, and A2A2, respectively.