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 or late pupal lethality.
Expression under the control of Scer\GAL4pnr-MD237 may result in mild thorax closure defects, depending on the insertion line used.
Expression under the control of Scer\GAL4pnr-MD237 results in an enlarged notum.