A genomic fragment containing the Det promoter and Det coding region fused at the C-terminal with GFP. The Det coding sequence contains two amino acid substitutions (S125A, T129A) that destroy two putative phosphorylation sites.
The presence of DetS125A.T129A.T:Avic\GFP rescues viability and diploidy in Det2180. However, the number of germline cells per egg chamber is not rescued.