UAS regulates expression of pcm containing an A to G mutation (GAG->GGA) at the conserved position E177G, which is predicted to abolish exonuclease activity (nuclease-dead, ND).
Neither the pupal lethality of pcm14 mutants nor the reduced size of their third instar larval wing discs is rescued by expression of pcmScer\UAS.ND under the control of Scer\GAL469B.