Fig. 9. Regulation of Cct1 expression by Egfr signaling and fused appendage and collapsed eggs produced by Cct1 mutant females. (A-C) In situ hybridization showing Cct1 expression during stages 12 and 13. Gap between Cct1-expressing follicle cells is indicated with brackets. (A) Wild-type egg chamber showing expression in dorsoanterior follicle cells. (B) Cct1 expression in a fs(1)K10 mutant background. (C) Cct1 expression in a background in which there are four copies of grk. (D) Wild-type egg. (E) Fused appendage phenotype in egg laid by a Cct1¹²⁴ female. (F) Collapsed egg phenotype in egg laid by a Cct1¹⁶⁹¹⁹ female.