Imprecise excision of the progenitor insertion, resulting in a deletion that removes fz4 sequences.
fz4[+]/fz425-1 is a suppressor of lethal | maternal effect phenotype of Scer\GAL4Act.PU, wntDUASp.cEa
One copy of fz425-1 suppresses the maternal effect lethality caused by expression of wntDScer\UAS.P\T.cEa under the control of Scer\GAL4Act.PU.