UAS regulatory sequences drive expression of E(spl)mα-BFM, which includes 7bp of 5'UTR sequence along with the coding sequence.
Expression of mαScer\UAS.cFa under the control of Scer\GAL4sca-537.4 results in the production of extra bristles (average 9.6 extra bristles per fly, total of 26 bristle positions on the notum and head assayed).