Scer\GAL4how-24B mediated expression causes some lethality during embryonic, larval and pupal development. A limited number survive to adulthood and have severe defects in their ability to fly. Scer\GAL4how-24B mediated expression causes myoblast fusion and elongation. Cardial cells are transformed into somatic muscle and the pattern of somatic muscle fibres is changed.
Scer\GAL4how-24B, knUAS.cVa, nauUAS.cKa has dorsal acute muscle cell | ectopic phenotype
Co-expression of knScer\UAS.cVa and nauScer\UAS.cKa using Scer\GAL4how-24B results in an ectopic DA3 muscle in thoracic segment 1 with very few nuclei (2-3).
Scer\GAL4how-24B/nauUAS.cKa partially rescues Df(3R)nau-9/Df(3R)nau-11a4
Expression of nauScer\UAS.cKa under the control of Scer\GAL4how-24B rescues the sterility of Df(3R)nau-11a4/Df(3R)nau-9 females. Rescue of the nau mutant phenotype is not complete; survival rates of the progeny of these females are 50% in larvae, 47% in pupae and 44% in adults.
Df(3R)nau-11a4/Df(3R)nau-9 embryos lack subset of muscle fibres, including the dorsal oblique, dorsal acute and lateral longitudinal muscles. Df(3R)nau-11a4/Df(3R)nau-9 embryos expressing nauScer\UAS.cKa under the control of Scer\GAL4how-24B do not show significant absence of these muscle fibres.