UASp regulatory sequences drive expression of full-length dl fused to sequences encoding a C-terminal WRPW motif.
Embryos derived from dl1 females expressing dlWRPW.Scer\UAS.P\T under the control of Scer\GAL4mat.αTub67C.T:Hsim\VP16 are almost as strongly dorsalised as embryos derived from dl1 females.