UAS regulatory sequences drive expression of a short inverted repeat.
Females heterozygous for Gprk2GL00233 and MTD-Gal4 (consists of Scer\GAL4otu.T:Hsim\VP16, Scer\GAL4nos.PG and Scer\GAL4nos.UTR.T:Hsim\VP16) crossed to Gprk2GL00233 males results in: 50% hatching; egg/embryonic phenotype: "50% has fusion of denticle belts, weak seg polarity, Hh signaling, hatched die at first instar"; maternal effect.