Table 2.
Fitness and frequencies of genotypes. (Female fitness is chosen for illustration, but a similar table can easily be drawn for males. The depiction in (a) shows the haplotype contributions from each parent to the diploid genotype; in (b), the two-locus diploid genotypes are decomposed into their single-locus components to show more clearly the contribution of each locus to fitness.)
| (a) | A1B1 | A1B2 | A2B1 | A2B2 |
|---|---|---|---|---|
| A1B1 | w11f, x1y1 | w12f, x1y2 | w13f, x1y3 | w14f, x1y4 |
| A1B2 | w21f, x2y1 | w22f, x2y2 | w23f, x2y3 | w24f, x2y4 |
| A2B1 | w31f, x3y1 | w32f, x3y2 | w33f, x3y3 | w34f, x3y4 |
| A2B2 | w41f, x4y1 | w42f, x4y2 | w43f, x4y3 | w44f, x4y4 |
| (b) |
B1B1 |
B1B2 |
B2B2 |
|---|---|---|---|
| A1A1 | (1 – sf)2, x1y1 | (1 – sf) (1 – 1/2sf), x1y2 + x2y1 | (1 – sf), x2y2 |
| A1A2 | (1 – sf) (1 – 1/2sf), x1y3 + x3y1 | (1 – 1/2sf)2, x1y4 + x4y1 + x2y3 + x3y2 | (1 – 1/2sf), x2y4 + x4y2 |
| A2A2 | (1 – sf), x3y3 | (1 – 1/2sf), x3y4 + x4y3 | 1, x4y4 |