Expression of mod(mdg4)ΔQ.Scer\UAS under the control of Scer\GAL4Act5C in a y2 mutant background completely overrides the y2,mod(mdg4)ul phenotype, resulting in flies that have a y2 appearance, with a paler abdomen and dark bristles.
Expression of mod(mdg4)ΔQ.Scer\UAS under the control of Scer\GAL4Act5C in a ct6,mod(mdg4)ul mutant background suppresses the effect that mod(mdg4)ul has on ct6 wings, and the wings that form lack the wing margin and are similar to ct6 wings.
Expression of mod(mdg4)ΔQ.Scer\UAS under the control of Scer\GAL4Act5C in a ctK,mod(mdg4)ul mutant background suppresses the effect that mod(mdg4)ul has on ctK wings, and the wings that form lack regions of the wing margin and are similar to ctK wings.