UASt regulatory sequences drive expression of an inverted repeat.
Expression under the control of Scer\GAL4Mef2.PR results in early pupal lethality.
Expression under the control of Scer\GAL4pnr-MD237 results in the absence of 70-80% or 80-90% of the Scer\GAL4pnr-MD237-expressing area of the notum, depending on the insertion line used.