Trl^en82/Trl^R85 mutant females lay one or two eggs per day, compared to 30-50 in wild type females. The size of the eggs varies from 320 to 400 micrometres, which is small compared to >500 micrometres seen in wild type flies. The eggs are elliptical and have short chorionic appendages.

Structural abnormalities are seen in the ovaries of Trl^en82/Trl^R85 mutant females from stage 10 of egg chamber development. Follicle cells are often localized to the posterior part of the oocyte and do not cover the posterior surface. Abnormal migration of centripetal cells is also seen. Many egg chambers contain oocytes of an irregular shape, and many oocytes are localized in the nurse cell region. In many egg chambers not all cytoplasm from the nurse cells is transferred to the oocyte, resulting in a 'dumpless' phenotype. Unlike in wild type, numerous nurse cells in degrading stage 9 and 10 egg chambers exhibit abnormal chromatin condensation. While most nurse cells demonstrate no significant abnormalities in the structure of cytoplasmic actin filaments formed before the phase of rapid transport at stage 10B, these filaments look thinner, less organised and are less evenly distributed over the chamber. Cytoplasmic actin filaments are completely absent in 1.8% of egg chambers, and the nurse cell nuclei block the ring canals in these egg chambers.