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 viable flies or embryonic lethality.
Expression under the control of Scer\GAL4Mef2.PR results in split larval body wall muscles.
Expression under the control of Scer\GAL4Mef2.PR results in wild-type sarcomeres in the larval body wall muscles.
Expression under the control of Scer\GAL4pnr-MD237 may result in lethality before the pupal stage, depending on the insertion line used.