The P{lacW} insertion is within intron 1.
lethal (with Df(2R)ED3636)
photoreceptor cell R1 & axon | somatic clone (with sbb1)
photoreceptor cell R1 & axon | somatic clone (with sbb2)
photoreceptor cell R1 & neuron
photoreceptor cell R2 & axon | somatic clone (with sbb1)
photoreceptor cell R2 & axon | somatic clone (with sbb2)
photoreceptor cell R2 & neuron
photoreceptor cell R3 & axon | somatic clone (with sbb1)
photoreceptor cell R3 & axon | somatic clone (with sbb2)
photoreceptor cell R3 & neuron
photoreceptor cell R4 & axon | somatic clone (with sbb1)
photoreceptor cell R4 & axon | somatic clone (with sbb2)
photoreceptor cell R4 & neuron
photoreceptor cell R5 & axon | somatic clone (with sbb1)
photoreceptor cell R5 & axon | somatic clone (with sbb2)
photoreceptor cell R5 & neuron
photoreceptor cell R6 & axon | somatic clone (with sbb1)
photoreceptor cell R6 & axon | somatic clone (with sbb2)
photoreceptor cell R6 & neuron
Third instar larvae homozygous for sbb04440 displays a significant increase in turning rate during crawling, as compared to controls.
In contrast to the wild-type, in mutant larvae, the lamina plexus is discontinuous. Thick bundles of axons are frequently observed between the lamina and the medulla, in striking contrast to the thin bundles in wild-type. In the most severe cases, the lamina plexus is largely missing and the medulla neuropil is hyperinnervated. In addition, disruptions in the normally smooth topographic map in then medulla are observed. However R-cell projections do not extend through the medulla into deeper layers of the optic lobe, suggesting that R8 neurons terminate, as in wild-type, within the medulla neuropil.
Homozygous larvae show significantly more turning behaviour on non-nutritive agar than wild-type larvae ("scribbler" behaviour).
A. Spradling.
Phenotypic analysis suggests an allelic series: sbb4 >= sbbk06903b > sbb5 = sbbk00702 > sbb04440.
Complements: l(2)0877002302. Complements: Hsf03091. Complements: l(2)0454804548. Complements: Prp1907838. Complements: lolalk02512. Complements: l(2)08770k04808. Complements: pAbpk10109. Complements: Pcls1859.