Egg chambers defective for early, slow, and late, fast cytoplasm transport into the oocyte. As early as stage 7 of oogenesis oocyte is smaller than wild type. Mutant egg cytoplasm looks rough and irregular. The small oocytes are surrounded by egg shell where dorsal appendages are shorter and fatter than wild type and sometimes fused dorsally. In the most extreme cases the anterior of the egg is open forming a cup shape. The small eggs usually degenerate in the ovary.
Abnormalities in follicle cell migration: open ended chorion.
Schupbach and Wieschaus.