TABLE 1.
Pigmentation scores of pure D. yakuba and D. santomea and of F1 hybrids from the reciprocal crosses and backcross individuals
| Genotype | Sex | Mean score (SE) | N |
|---|---|---|---|
| D. yakuba Taï 18 | M | 14.22 (0.30) | 51 |
| F | 9.85 (0.15) | 53 | |
| D. santomea STO.4 | M | 0.63 (0.05) | 50 |
| F | 1.02 (0.06) | 56 | |
| F1 (Y × S) | M | 11.92 (0.21) | 51 |
| F | 4.62 (0.18) | 50 | |
| F1 (S × Y) | M | 3.72 (0.21) | 51 |
| F | 4.29 (0.12) | 51 | |
| Backcross (F1 × Y) | M | 7.26 (0.18) | 544 |
| F | 7.42 (0.09) | 544 | |
| Backcross (F1 × S) | M | 4.50 (0.16) | 517 |
| F | 2.05 (0.13) | 73 |
Y, D. yakuba; S, D. santomea (Taï 18 and STO.4 strains were used in all crosses). In all crosses the genotype of the female parent is given first. All F1 females were produced by crossing D. yakuba females to D. santomea males.