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dm mutations are female lethal
| dm/dm, % (n) | dm/FM7 (n) | dm/Y, % (n) | FM7/Y (n) | (n) | |
| dm1/FM7 x dm1/Y | 6 (46) | (731) | 85 (624) | (456) | (1,857) |
| dmP0/FM7 x dmP0/Y | 46 (233) | (522) | 73 (380) | (343) | (1,388) |
| dmP1/FM7 x dmP1/Y | 23 (94) | (410) | 51 (209) | (374) | (1,087) |
Progeny of each type from crossing dm/Bal females to dm/Y males (as indicated in column 1) were counted. Percentage in second and fourth columns is calculated on the basis of number of dm/FM7 females.
