UASt regulatory sequences drive expression of an inverted repeat.
partially lethal - majority die, with Scer\GAL4pnr-MD237
some die during pupal stage, with Scer\GAL4pnr-MD237
viable, with Scer\GAL4tin.CΔ4
Expression under the control of Scer\GAL4pnr-MD237 may result in semi-lethality, depending on the insertion line used.