Homozygous females are sterile, and lay 1.9-2.8% as many eggs as wild-type. The endochorion has occasional defects, and the respiratory appendages are abnormal.
Mature follicles of homozygous females have minor defects in the endochorion (the defects are seen only in some areas of the eggshell) and have defective respiratory appendages.
morphologically abnormal eggs that fail to hatch. Various defects in respiratory appendages and chorionic architecture germ-line-dependent
Germ line clonal analysis shows that fs(1)de17a is germ line-dependent.