UAS regulatory sequences drive expression of a short inverted repeat.
Females heterozygous for twsHMS01578 and MTD-Gal4 (consists of Scer\GAL4otu.T:Hsim\VP16, Scer\GAL4nos.PG and Scer\GAL4nos.UTR.T:Hsim\VP16) crossed to twsHMS01578 males results in: 95% hatching; non-maternal effect.