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 late pupal lethality.
Expression under the control of Scer\GAL4pnr-MD237 may result in semi-lethality, depending on the insertion line used.
Expression under the control of Scer\GAL4pnr-MD237 results in the absence of 0% or 80-90% of the Scer\GAL4pnr-MD237-expressing area of the notum, depending on the insertion line used.