Fig. 1.

Merlin and Expanded signaling requires Yorkie. (A) Third instar eye imaginal disc containing mer;ex mutant clones marked by the absence of GFP expression (in green). Mutant clones had elevated membrane levels of DER (red in A, grayscale in A′) behind the morphogenetic furrow. Arrowheads point to clone borders in these and all subsequent panels. (B) mer;ex mutant clones in a wing disc showed elevated levels of Ft. (C,D) wts mutant clones in an eye (C) and a wing (D) disc accumulated Ft at the membrane. (E) mer;ex,yki triple mutant clones did not upregulate DER in an eye disc. (F) yki; wts double mutant clones did not upregulate Ft in a wing disc. Anterior is to the left and dorsal is up for all discs. Scale bars: 50 μm.