Table 1.
Viability of N, dx and e(r) double-mutant combinations
| X chromosome tested | Heterozygous females | Hemizygous tester males |
| Single mutants | ||
| Nnd-p | 351 | 276 |
| Nnd-1 | 153 | 158 |
| Nnd-3 | 159 | 213 |
| e(r)p2 | 344 | 333 |
| e(r)27-1 | 734 | 243 |
| e(r)37-6 | 1137 | 530 |
| dx | 185 | 197 |
| Double mutants | ||
| Nnd-p e(r)p2 | 2835 | 32 |
| Nnd-p e(r)27-1 | 4209 | 0 |
| Nnd-p e(r)37-6 | 2426 | 0 |
| Nnd-1 e(r)p2 | 304 | 0 |
| Nnd-1 e(r)27-1 | 1741 | 1 |
| Nnd-3 e(r)p2 | 700 | 3 |
| Nnd-3 e(r)27-1 | 258 | 0 |
| Nfa-g e(r)27-1 | 1021 | 587 |
| Nspl-1 e(r)27-1 | 471 | 95 |
| Nfa-swb e(r)27-1 | 1010 | 305 |
| dx e(r)27-1 | 1481 | 0 |
All of the mutations are on the X chromosome, so viability was measured as the number of hemizygous males vs. the number of heterozygous sisters as a control. If there are no viability differences between the two groups, the numbers should be roughly equal. The data for the single mutants e(r)p2, e(r)27-1 and e(r)27-1 have been previously reported in reference 17 and are used here as controls.