UAS regulatory sequences drive expression of full-length so which is tagged at the C-terminal end with the VP16 activation domain.
soVP16.UAS.FL.CT/Scer\GAL4ey.PU partially rescues so1
Expression of soScer\UAS.FL.CT.T:Hsim\VP16 under the control of Scer\GAL4ey.PU partially restores eye development in so1 flies.