The PAI, L, and RED domains of ey has been replaced by the PAI, L, and RED domains of eyg.
eye | pharate adult stage, with Scer\GAL4dpp.blk1
wing disc, with Scer\GAL4dpp.blk1
Unlike overexpression of wild-type ey, expression of ey::eygGGGEEE.Scer\UAS, driven by Scer\GAL4dpp.blk1, does not induce ectopic eyes, but causes eye reduction and a massive overgrowth of the wing disc.