Expression of Zzzz\tslrScer\UAS.P\T.cDa under the control of Scer\GAL4mat.αTub67C.T:Hsim\VP16 results in embryos with cuticle defects: in mild cases, fusion of abdominal denticle belts is seen, in moderate cases the affected cuticles are shorter than normal, show fusion of denticle belts and have head involution defects and in severe cases there are one or two incompletely formed denticle belts and substantial defects in head patterning.