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 flightless flies or late larval lethality.
Expression under the control of Scer\GAL4Mef2.PR results in missing adult indirect flight muscles.
Expression under the control of Scer\GAL4Mef2.PR results in degenerate myofibrils in the adult indirect flight muscles.
Expression under the control of Scer\GAL4Mef2.PR results in missing sarcomeres in the adult indirect flight muscles.