FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
Recessive, soma-dependent, maternal mutation that causes the chorion to be extremely thin and easily disrupted.
Eggs derived from fchunspecified mutant females have a very thin or non-existent chorion.