UAS regulatory sequences drive expression of Ppyr\LUC followed by a genomic fragment containing an miRNA cluster (includes the mir-9c, mir-306, mir-79 and mir-9b pre-miRNA hairpins).
Expression of P{UAS-LUC-mir-9c.mir-306.mir-79.mir-9b.T} under the control of Scer\GAL4sd-SG29.1 results in slightly curved, spoon-shaped wings. The distribution of hairs on the wing margin is not homogeneous and the hairs are shorter than normal.