Egg chambers appear normal until early stage 10, but after stage 10 the nurse cells fail to regress and deliver their contents into the oocyte. Consequently the oocytes are approximately half the normal size. The cytoplasmic actin bundles that assemble in wild type nurse cells just prior to the onset of rapid transport are missing. The nurse cell nuclei assume an elongated morphology and often extend through the ring canals. The few eggs laid by these females fail to develop.

Eggs are tiny due to a failure to transport nurse cell content into the oocyte.