FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
Homozygous clones do not seem to persist into the adult, but these cells can survive for long enough to occasionally have dramatic effects on wing and eye development; some flies in which clones have been induced have scars in the eye/missing photoreceptors, rough eyes, wing blisters, wing margin notching and altered wing blade morphology. No obvious defects are seen in the legs, halteres, antennae, thorax or abdomen in these flies. Some flies with twin spots in the eye appear morphologically normal.