Homozygous clones in ventral head tissue result in ectopic eye formation, some of which are at the tip of a tubular outgrowth. Clones within the compound eye or dorsal head structures do not show morphological phenotypes. The eye shape may be distorted when homozygous clones cross the eye border. Ectopic photoreceptor differentiation and local outgrowth can be seen in the eye-antenna discs of late third instar larvae bearing homozygous clones. These ectopic photoreceptors are only found in the ventral margin of the disc, and clones in the dorsal margin of the disc do not induce ectopic photoreceptor development. Homozygous clones in the second or third antennal segments result in transformation to leg-like structures, with larger clones producing a clear claw structure indicative of a distal leg. Clones in the coxa, femur or tibia often cause fusion of these leg segments, whereas clones in the tarsal segments are morphologically normal. Clones in the mesonotum and abdomen do not have significant morphological phenotypes.