A genomic fragment containing the Det promoter and Det coding region fused at the C-terminal with GFP. The Det coding sequence contains an amino acid residue substitution (T129A) that destroys a putative phosphorylation site.
The presence of DetT129A.T:Avic\GFP rescues viability and diploidy in Det2180. However, the number of germline cells per egg chamber is not rescued.