Expression of the osk cDNA is under the control of UASp regulatory sequences.
Scer\GAL4VP16.otu, Scer\GAL4VP16.nanos.UTR, oskUASp.Δi.1.2.3 fails to rescue oskA87/Df(3R)p-XT103
Embryo hatching rate and cuticle defects in the progeny of oskA87/Df(3R)p-XT103 mothers are not rescued by maternal oskScer\UAS.P\T.primary with Scer\GAL4otu.T:Hsim\VP16 and Scer\GAL4nos.UTR.T:Hsim\VP16.