Fig. 7. Negative regulation of eyg by Hh signalling. (A-C) Clone of cells mutant for smo (arrow; marked black in B) showing gain of eyg activity (red). (D) A smo clone marked with yellow (arrow) in the adult cuticle. An amplification is shown in the lower panel. The clone differentiates notum structures resembling the scutum, as indicated by the microchaetes. (E-G) Clones mutant for ptc (arrows) exhibit loss of eyg expression.