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Fitness expressions for the viability of offspring resulting from all possible combinations of parental genotypes at Y and the compensatory locus A (or X)
| Father’s Y genotype | Mother’s genotype | ||
| AA, XX | Aa, Xx | aa, xx | |
| Y | 1 | 1 − hcsc | 1 − sc |
| y | 1 − so | 1 − hoso | 1 |
