Overexpression of ptcScer\UAS.cUa at the A-P boundary by Scer\GAL4ptc.PU decreases distance between the L3 and L4 wing veins.
The progressive lethality and locomotor defects of ptc559.1/Df(2R)Np3 adults can be fully suppressed by expression of ptcScer\UAS.cUa under the control of Scer\GAL4ptc-559.1 in the mutant background.