Inactivation of CK2β produces loss of Hh phenotype in fly adult wing. A, A wild-type (WT) adult wing showing interveins 1–5. B, C765-Gal4 fly with a WT wing. C, wing expressing CK2βRNAi by C765-Gal4. The phenotype assembles the effects of CK2βRNAi on multiple developmental pathways. D, wing from flies expressing Smo-PKA12 by C765-Gal4. E, wing from flies expressing Smo-PKA12 by C765-Gal4 in the background of CK2αTik/+. F, wing coexpressing Smo-PKA12 with CK2βRNAi by C765-Gal4. G, wing coexpressing Smo-PKA12 with CK2βRNAi and CK2β. H, ptc-Gal4 flies with WT wings. I, adult wing expressing CK2βRNAi by ptc-Gal4. J–M, wing discs expressing Smo-PKA12 alone (K), along with CK2αTik/+ (L), or along with CK2βRNAi (M) by C765-Gal4 stained for Ptc.