Mutated EcoR1 fragment of ~2kb cDNA (carries the amino acid replacement A593S) is driven by UASt sequences.
Expression of DlA593S.Scer\UAS, under the control of Scer\GAL4GMR.PF, results in duplication of bristles and melting and smoothing of lens material. There are also extra photoreceptors and extra interommatidial pigment cells. Flies expressing DlA593S.Scer\UAS, under the control of either Scer\GAL4vg.int2.1 or Scer\GAL4A9, have rudimentary wings.