UAS regulatory sequences drive expression of pho which is tagged at the C-terminal end with 3 copies of Tag:FLAG.
phoUAS.Tag:FLAG/Scer\GAL4arm.PS partially rescues pho1
Expression of phoScer\UAS.T:Zzzz\FLAG under the control of Scer\GAL4arm.PS partially rescues pho1 homozygotes: approximately 10% of rescued adult males show moderate A4-A5 transformations.