HindIII-BamHI fragment from positions +295 to +762 of the 5' region of the Fex element is fused upstream of a lacZ reporter.
In embryo, expression in blastoderm and CNS and trachae sensitive to position effect. Replicates wild-type expression of F-element transcripts, except that no expression observed in testis or nurse cells.
construct_comment: Progenitors are those of the plasmid.