A GFP tag is cloned downstream of Orc1 genomic sequences, driven by an endogenous promoter.
Orc1+t.GFP rescues Orc1KO
Orc1+t.GFP rescues Orc1KO/Df(2R)ST1
The proliferation defect seen in Orc1KO mitotic clones is rescued through the presence of Orc1+t.T:Avic\GFP.