UAS regulatory sequences drive expression of an inverted repeat of a 400bp fragment corresponding to the tal 5'UTR (the two copies are separated by the ftz intron).
Flies expressing taldsRNA.Scer\UAS under the control of Scer\GAL4bab1-GAL4-U have misshapen tarsal segments and lack joint structures in the leg. Necrotic tissue and ectopic bristles are also seen in the leg.