lamina anlage (with InR353)
medulla anlage (with InR353)
photoreceptor cell & axon
photoreceptor cell & axon (with InR353)
Surviving homozygous third instar larvae have mild guidance defects in the photoreceptor cell axons, including gaps and clumping of axons in the lamina. Surviving InR273/InR353 third instar larvae have guidance defects in the photoreceptor cell axons; gaps in the lamina, crossing of axons and failure of growth cone expansion in the medulla are seen.