Clones in the eye expressing arm^act.hs.2sev lack ommatidia. Outside of the clones, ectopic dorsal rim photoreceptor cells can be observed, meaning that these cells have been induced nonautonomously by the neighbouring arm^act.hs.2sev clone. Additionally, although most of the arm^act.hs.2sev clones appear as pigment rim-like tissue, ommatidia are able to form in clones close to the wild-type tissue.

Clones in the eye expressing arm^act.hs.2sev produce severely disrupted ommatidia, which are frequently devoid of photoreceptors, and the retinal tissue appears to be made largely of pigment cells. At the interface with wild-type tissue, wild-type ommatidia form which may be composed completely of mutant cells or may be mosaics of wild-type and mutant cells. These ommatidia are always of the appropriate chiral form.