The PBac{IT.GAL4}udd0683-G4 insertion maps within the udd gene.
udd0683-G4/udd0683-G4 and udd0683-G4/uddnull ovaries are small. udd0683-G4/uddnull ovaries contain egg chambers up to stages 11 of oogenesis, which show apoptotic chromatin condensation; nucleoli in stage 7 nurse cells are less branched.