Eggs produced by heterozygous females are normal in size with two normal sized but very thin dorsal appendages. The chorion is much thinner than wild-type.
dominant female-sterile. Eggs from heterozygous females have a thin chorion; not germ line-dependent (Wright).
Analysis of germ-line chimeras shows that this mutation is not germ-line- dependent. Analysis of ovarian chimeras shows that Fs(2)Etr+ function is required in the ovarian soma.