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 in the wing produce wing blisters. Blisters are associated with both dorsal and ventral clones. The pattern of veins and trichome polarity is normal, and there is no overgrowth or disruption to the overall wing shape and pattern.