Viable. Adult eye and optic lobes have defects. The unconnected phenotype exhibits photoreceptors that degenerate with age, disorganized muscle tissue fills the space normally occupied by optic ganglia: flies are blind. The connected phenotype exhibits photoreceptor axons that innervate the optic ganglia, structure is disorganized and distinguishable from wild type. Extensive degeneration of photoreceptor cells becomes apparent in the form of dark spots on the compound eye.

reduced viability.