Poor elaboration of dendrites in Cul3 mutant γ neurons. Close-up views of the dendritic regions of MARCM-labeled adult γ neurons. Wild-type γ neurons (WT; A, B) acquired longer dendritic branches than Cul3 mutant γ neurons (C, D). Arrows in A and B point to the typical claw-like structures at the ends of wild-type dendritic processes. Note that mutant dendrites often stall with dense irregular endings (arrows in D). Genotype: A, B, hs-FLP/X;UAS-mCD8-GFP,FRT40A/tubP-GAL80,FRT40A;GAL4-OK107/+; C, D, hs-FLP/X;Cul38,UAS-mCD8-GFP,FRT40A/tubP-GAL80, FRT40A;GAL4-OK107/+.