UAS regulatory sequences drive expression of an inverted repeat.
Expression of Scer\GAL4ey.PH under the control of results in occasional small and deformed eye phenotype with ectopic vibrissae; no overt adult phenotype is observed with any of the following drivers: Scer\GAL4GMR.PF, Scer\GAL4nub.PK or Scer\GAL4en.PU. Scer\GAL4Act5C.PI-driven expression is viable.