Table 1.
The ability of various transgenes to restore the viability and fertility of the Mer4 allele.
| Genetic cross | Males carrying Mer4 | Viability | Fertility |
| ♀♀ y w Mer4/FM7i, GFP; +/+; +/+ × ♂♂ w sn/Y; +/+; P{w+ = cosMer+}/+ | y w Mer4/Y; +/+; P{w+ = cosMer+}/+ | + | + |
| y w Mer4/Y; +/+; +/+ | - | - | |
| ♀♀ y w Mer4/M-5, B wa; +/+; +/+ × ♂♂ y w/Y; Act5C-Gal4/If; P{w+ = UASP-Mer+}/TM6, Tb | y w Mer4/Y; Act5C-Gal4/+; P{w+ = UASP-Mer+}/+ | + | + |
| y w Mer4/Y; Act5C-Gal4/+; +/TM6, Tb | - | - | |
| y w Mer4/Y; If/+; TM6, Tb/+ | - | - | |
| y w Mer4/Y; If/+; P{w+ = UASP-Mer+}/+ | - | - | |
| ♀♀ y w Mer4/M-5, B wa; +/+; +/+ × ♂♂ y w/Y; Act5C-Gal4/If; P{w+ = UASP-Mer3}/TM6, Tb | y w Mer4/Y; Act5C-Gal4/+; P{w+ = UASP-Mer3}/+ | + | - |
| y w Mer4/Y; Act5C-Gal4/+; +/TM6, Tb | - | - | |
| y w Mer4/Y; If/+; TM6, Tb/+ | - | - | |
| y w Mer4/Y; If/+; P{w+ = UASP-Mer3}/+ | - | - |