A
1
A
1
A
1
A
2
A
2
A
2
Initial genotypic frequencies
p
2
2
pq
q
2
Fitnesses
W
11
W
12
W
22
Proportionate contribution of genotypes to population
p
2
W
11
2
pqW
12
q
2
W
22
Relative genotypic frequency after selection
Note:
=
p
2
W
11
+ 2
pqW
12
+
q
2
W
22
Table 25.4:
Method for determining changes in allelic frequency due to selection