
Fig. 1. Dll, hth and ss mutants all exhibit antenna to leg transformations. (A) Wild-type antenna. (B) Dll3/Dll7 hypomorphic antenna in which distal a3 and the arista are transformed toward leg. (C) A large hthP2 clone in the antenna results in transformation of a1 to arista into leg structures. (D) ss null antenna of genotype Df(3R)ssD114.4/ssD114.9. a1-a5, antennal segments 1-5: ar, arista.