10% of homozygotes survive to adulthood at 25[o]C, and 20% survive at 18[o]C. Homozygous and Rpp3018.2/Rpp30k01901 flies are normal in size.
Homozygous ovaries are rudimentary due to oogenesis arrest at an early stage of development. Homozygous clones in the germline result in egg chambers that arrest as early as in homozygous mutant ovaries, whereas egg chambers in which all follicle cells are homozygous develop normally.
Egg chambers containing coconut18.2 mutant germline clones arrest oogenesis at stage 4-5. In some cases the oocyte is mislocalised within the egg chamber. Oogenesis arrests slightly earlier in homozygous coconut18.2 mutant escapers.