Approximately 23% of dmP0 homozygous females survive to adulthood, compared with 51% of sibling dm1/Y males.
Irradiation of mutant eye discs with 5 or 10 Gy results in fewer apoptotic cells than irradiation of wild-type discs, although irradiation of eye discs with 50 Gy results in a high number of apoptotic cells in both wild-type and mutant discs.
Homozygous pupae are more sensitive to X rays than wild type or heterozygous sibling controls.
Oogenesis in dmP1 homozygous females is arrested between stages 10 and 11.
Stronger phenotype than dmP0. Thin and shortened bristles. Small body size. Size of wing cells, wing width and wing length are reduced. Number of wing cells may also be reduced. Developmental rate is reduced and flies occasionally have small, roughened eyes. Dissociated wing disc cells are reduced in size compared to wild type. Twin spot analysis of mutant clones shows that dm mutant cells grow very poorly, particularly in the posterior compartment of the wing disc.