UASp regulatory sequences drive expression of truncated otk coding sequences (with the extracellular domain deleted) tagged with GFP.
otkΔEx.UASp.GFP/Scer\GAL4da.G32 fails to rescue Df(2R)D72
Expression of otkΔEx.Scer\UAS.T:Avic\GFP under the control of the ubiquitous driver Scer\GAL4da.G32 fails to rescue the Df(2R)D72 mutant male sterile phenotype.