photoreceptor cell R1 & axon | somatic clone, with sbb1
photoreceptor cell R1 & axon | somatic clone, with sbb2
photoreceptor cell R2 & axon | somatic clone, with sbb1
photoreceptor cell R2 & axon | somatic clone, with sbb2
photoreceptor cell R3 & axon | somatic clone, with sbb1
photoreceptor cell R3 & axon | somatic clone, with sbb2
photoreceptor cell R4 & axon | somatic clone, with sbb1
photoreceptor cell R4 & axon | somatic clone, with sbb2
photoreceptor cell R5 & axon | somatic clone, with sbb1
photoreceptor cell R5 & axon | somatic clone, with sbb2
photoreceptor cell R6 & axon | somatic clone, with sbb1
photoreceptor cell R6 & axon | somatic clone, with sbb2
R7 and R8 photoreceptor cell axons extend normally through the lamina to terminate in the medulla in animals expressing sbbA.GMR.T:Hsap\MYC.
sbbA.GMR.Tag:MYC partially rescues sbb1
sbbA.GMR.Tag:MYC partially rescues sbb2
The photoreceptor R1-R6 cell targeting defects of sbb1 or sbb2 mosaics (in which almost all of the eye is homozygous for the sbb mutation while other tissues are heterozygous) are partially rescued by sbbA.GMR.T:Hsap\MYC; most R1-R6 axons correctly target the lamina, although a small number of R1-R6 axons in each hemisphere, predominantly those in the posterior regions of the eye, still project through the lamina to terminate in the medulla.