Homozygous females lay few or no eggs and show defects in oogenesis during choriogenesis. Follicles of homozygous females have no defects in the endochorion and the respiratory appendages are normal.
Recombination mapping of fs(1)ne3b is not consistent with the phenotype being caused by a single mutation. The phenotype of the fs(1)ne3b chromosome may be caused by two mutations, one at an extreme distal position and one at an extreme proximal position on the chromosome, both of which must be present to confer the "no egg" phenotype. Since two alleles of fs(1)ne3 have been isolated in the same screen, this suggests that at least one mutation was present on the parental chromosome. Germ line clonal analysis shows that fs(1)ne3b is germ line-dependent.
Recombination mapping of fs(1)ne3b is not consistent with the phenotype being caused by a single mutation. The phenotype of the fs(1)ne3b chromosome may be caused by two mutations, one at an extreme distal position and one at an extreme proximal position on the chromosome, both of which must be present to confer the "no egg" phenotype. Since two alleles of fs(1)ne3 have been isolated in the same screen, this suggests that at least one mutation was present on the parental chromosome. Germ line clonal analysis shows that fs(1)ne3b is germ line-dependent.