TABLE 2.
Gonadal dysgenesis in the offspring of reciprocal F1 hybrids between TP and M′ strains
| Cross I: | Cross II: | ||||
|---|---|---|---|---|---|
|
TP present in F2 ♀♀
|
TP ♀ × stock ♂ → F1 ♀
|
TP ♂ × stock ♀ → F1 ♀
|
|||
| Stock | No. of F2 ♀♀ | %GD ± SEa | No. of F2 ♀♀ | % GD ± SEa | |
| Control crosses with TP5 | |||||
| Samarkand (M) | + | 304 | 94.7 ± 2.7 | 320b | 96.8 ± 1.0 |
| 257 | 97.2 ± 1.4 | 336b | 99.8 ± 0.2 | ||
| Control crosses with TP6 | |||||
| Samarkand (M) | + | 328 | 64.8 ± 4.6 | 218 | 99.6 ± 0.4 |
| 336 | 76.7 ± 4.3 | 246 | 100.0 ± 0.0 | ||
| M′ crosses with TP5 | |||||
| Sexi.4 (M′) | + | 270 | 34.5 ± 4.2 | 403 | 96.6 ± 1.6 |
| 267 | 45.7 ± 5.2 | 371 | 97.4 ± 1.0 | ||
| Sexi.7 (M′) | + | 323 | 39.6 ± 4.9 | 376 | 69.5 ± 5.6 |
| 314 | 44.3 ± 5.5 | 353 | 67.0 ± 4.3 | ||
| M5B#1 (M′) | + | 308 | 43.6 ± 4.7 | 356 | 85.6 ± 2.8 |
| 256 | 44.9 ± 4.9 | 297 | 88.5 ± 2.6 | ||
| M′ crosses with TP6 | |||||
| Sexi.4 (M′) | + | 406 | 1.1 ± 0.5 | 374 | 76.1 ± 7.6 |
| 411 | 2.1 ± 0.7 | 420 | 76.5 ± 7.6 | ||
| Sexi.7 (M′) | + | 337 | 3.8 ± 2.4 | 275 | 70.7 ± 6.6 |
| 312 | 0.9 ± 0.5 | 274 | 70.9 ± 6.6 | ||
| M5B#1 (M′) | + | 297 | 0.0 ± 0.0 | 315 | 7.4 ± 2.9 |
| 265 | 0.4 ± 0.4 | 288 | 13.2 ± 4.2 | ||
| M′ crosses with w m f (M strain)c | |||||
| Sexi.4 (M′) | 468 | 100.0 ± 0.0 | 478 | 100.0 ± 0.0 | |
| Sexi.7 (M′) | 449 | 100.0 ± 0.0 | 452 | 99.6 ± 0.3 | |
| M5B#1 (M′) | 421 | 98.7 ± 0.6 | 479 | 99.8 ± 0.2 | |
These data were obtained from two separate experiments, one involving crosses with the TP5 strain and the other involving crosses with the TP6 and w m f strains.
a
Unweighted mean percentage of GD ± standard error.
b
In these groups, 24 F1 females were tested; in all other groups, 25 F1 females were tested.
c
The M strain w m f was substituted for the TP strains in crosses I and II, and the F2 females were scored for GD without regard to eye color.