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 semi-lethality.
Expression under the control of Scer\GAL4pnr-MD237 results in lethality or semi-lethality at the pupal stage, depending on the insertion line used.
Expression under the control of Scer\GAL4pnr-MD237 results in extra bristles on the notum in 10-20% of the Scer\GAL4pnr-MD237 expression domain.
Expression under the control of Scer\GAL4pnr-MD237 results in the absence of 80-90% of the Scer\GAL4pnr-MD237-expressing area of the notum.