5' portion of w, Hsp70 promoter sequence and an FRT site.
FLPase-induced recombination between the FRT sites of P{RS5} leaves the 5' exon of w+mW.FRT.hs flanked on its 3' end by a FRT site oriented convergently with respect to the direction of w transcription.
Carried in episome eFRT-RS3.
Carried in episome eFRT-RS3.