UAS regulatory sequences drive expression of a short inverted repeat.
Females heterozygous for Cdk9GL00230 and MTD-Gal4 (consists of Scer\GAL4otu.T:Hsim\VP16, Scer\GAL4nos.PG and Scer\GAL4nos.UTR.T:Hsim\VP16) crossed to Cdk9GL00230 males results in: no eggs; egg/embryonic phenotype: no vitellogenic egg chambers; oogenesis defect.