Dendritic phenotypes in mutants for actin regulatory proteins. (A and B) MARCM clones were generated for ena⁴⁶ (n = 15 neurons) and shot³ (n = 2) as compared with control FRT^G13 (n = 11; A) as well as arpC1^r337st (n = 8), dia⁵ (n = 5), and capt^E636 (n = 6) as compared with control FRT^40A (n = 7; B). (C) RNAi knockdowns for sqh (n = 10), zip (n = 10), and chic (n = 9) were compared with ppk-GAL4 control (n = 12). Bar graphs in A′–C′ show the number of dendritic endpoints for A–C, respectively, scored in the dorsal posterior region of class IV da neurons at the wandering third instar stage. Each dot represents the number of endpoints in a neuron. shot³ exhibited reduced availability of MARCM clones, indicating neuronal loss. Significance was determined using Student’s t test. *, P < 0.05; ***, P < 0.001. Error bars represent SEM.