UAS regulatory sequences drive expression of a version of Sdc in which amino acids 62, 79, 81, 110, 194 have been changed from S to A. The construct contains 72 silent mutations in the 375bp region that is targeted by P{UAS-Sdc.RNAi.S}, to prevent RNAi silencing by this construct (RNAi Escape Strategy Construct (RESC) method).
SdcRESC.ΔGAG.UAS/Scer\GAL4btl.PS fails to rescue SdcRNAi.UAS.cSa
Expression of SdcRESC.ΔGAG.Scer\UAS fails to rescue the loss of dorsal branch fusion seen when SdcdsRNA.Scer\UAS.cSa is expressed under the control of Scer\GAL4btl.PS.