UASt regulatory sequences drive expression of an inverted repeat.
Depending on the insertion line used, expression under the control of Scer\GAL4Mef2.PR can result in a weak flyer phenotype.
Expression under the control of Scer\GAL4pnr-MD237 results in lethality or semi-lethality at the pupal stage, depending on the insertion line used.
Expression of DopRGD688 under the control of Scer\GAL4elav.PLu leads to adult lethality and flight defects. Expression under the control of Scer\GAL4Mef2.PR causes a milder phenotype - flies are viable and show milder flight defects.