Fig. 7. cut expression in the antenna is dependent on hth, but not on Dll or ss. (A,A'). Expression of Cut (red) and Hth (green) in a wild-type antenna disc. (B,B'). Cut (red) expression is reduced (arrowheads) or lost (arrows) in hth null clones in the antenna disc. (C,C',C'') Cut (red) is expressed in a Dll null clone in the antenna. Dll is in blue. (D) The allelic combination of Dll^GAL4/Dll³ results in loss of the arista and transformation of a3 toward leg. a2 is present and has a normal cuticle. (E) Cut (red) is derepressed in the center of a Dll hypomorphic antenna disc. (F) Cut (red) is expressed normally in a ss null (Df(3R)ss^D114.4/ss^D114.9) antenna disc.