UASt regulatory sequences drive expression of an inverted repeat.
Expression of MED21GD4259 under the control of Scer\GAL4bam.T:Hsim\VP16 (in combination with a Dicer-2 transgene to enhance RNAi efficiency) results in partial meiotic arrest in spermatocytes.
Expression under the control of Scer\GAL4pnr-MD237 results in strong thorax closure defects.