Heterozygous females lay eggs that are abnormal in structure and lack dorsal appendages. Generation of wild type clones of follicle cells by X irradiation of females at the third instar phase rescues the mutant phenotype efficiently, up to 80% females lay normal eggs that undergo proper embryonic development.
Female viability and male fertility are not reduced. Anterior egg coverings are incompletely formed leading to leakage of egg cytoplasm followed by degeneration of egg primordia and formation of flaccid eggs with rudimentry chorionic appendages.
dominant female-sterile. Majority of eggs produced by Fs(3)Apc/+ females collapse; 1-5% not flaccid. Respiratory appendages of chorion rudimentary as in the anterior chorion. When fertilized, resulting embryos rarely develop cuticular derivatives. Follicle cells in ovarioles fail to migrate between the oocyte and nurse cells. Mutant does not successfully revert. Germ-line chimaeras demonstrate that Fs(3)Apc is follicle-cell autonomous.
Fs(3)Apc1 has dorsal appendage | somatic clone phenotype, suppressible by Atg1Δ3D
Fs(3)Apc1 has embryonic/larval cuticle | somatic clone phenotype, suppressible by Atg1Δ3D
Fs(3)Apc1 has egg | somatic clone phenotype, suppressible by Atg1Δ3D
Atg1Δ3D, Fs(3)Apc1 has dorsal appendage | somatic clone phenotype
Atg1Δ3D, Fs(3)Apc1 has egg | somatic clone phenotype
Atg1Δ3D, Fs(3)Apc1 has embryonic/larval cuticle | somatic clone phenotype