Expression of vg^{dsRNA.Scer\UAS} under the control of Scer\GAL4^Dll-md23 or Scer\GAL4^en-e16E results in a reduction in adult wing size in both an autonomous and nonautonomous manner; greater reductions in size are seen when flies are raised at higher temperatures, at least in the case of Scer\GAL4^Dll-md23-mediated expression. The reduction in size of the adult wing is not associated with changes in cell death or cell size during imaginal development.

Clones of cells expressing vg^{dsRNA.Scer\UAS} in the prospective wing blade of the wing imaginal disc frequently (81%) show an atypical morphology: they become narrower where the amount of vg is highest, thus forming a triangular shape pointing towards the prospective wing margin.

Cell clones expressing vg^{dsRNA.Scer\UAS} under the control of Scer\GAL4^αTub84B.PL (generated using the MARCM technique) in the prospective wing blade of the wing disc have a significantly longer doubling time (lower rate of proliferation) compared to controls.