UASt regulatory sequences drive expression of an inverted repeat.
Expression under the control of Scer\GAL4Mef2.PR results in grossly normal adult indirect flight muscles.
Expression under the control of Scer\GAL4Mef2.PR results in trapezoid myofibrils in the adult indirect flight muscles.
Expression under the control of Scer\GAL4Mef2.PR results in sarcomeres with broadened Z-lines in the adult indirect flight muscles.