Mutation in the CG31320 open reading frame.
Homozygous clones can be recovered in the eye. Females containing homozygous germ-line clones show defects in early oogenesis. The mutant egg chambers specify an oocyte, but the karyosome is often stringy or not properly condensed.
Selected as: a mutation that results in a failure to produce eggs when females carry homozygous germ-line clones.