Truncated Amx causes wing notching or wing loss when expressed with multiple wing-expressed GAL4 drivers.
(A) AmxΔECD expressed in the developing wing pouch with nub-GAL4 causes notching along the wing margin. (B) Homozygous nub-GAL4, UAS-amxΔECD recombinant animals show near complete loss of wing (arrow). (C) dpp-GAL4 (expressed between the third and fourth wing veins) driven expression of AmxFL has no effect on wing morphology. (D) dpp-GAL4 driven expression of AmxΔECD causes notching at the wing tip.