UASp regulatory sequences drive expression of fz4.
Expression of fz4Scer\UAS.P\T.cMa under the control of Scer\GAL4Act.PU suppresses the ability of Df(1)Sxl-bt to suppress the maternal effect lethality caused by expression of wntDScer\UAS.P\T.cEa under the control of Scer\GAL4Act.PU.