A set of ~800 largely isogenic deficiency stocks created by FLP-induced recombination between FRT-carrying transgenic insertions; molecularly defined deletion endpoints correspond to initial location of the progenitor insertions. Designed to fill gaps in deletion coverage and breakpoint placement; also used to replace older available deficiencies that have not been molecularly mapped.
The breakpoints of Df(2R)BSC783 predicted from the Release 5 genomic coordinates of the progenitor PBac{WH}asrijf07572 and P{XP}d01755 transposable element insertion sites are 2R:18774154 ;18821549 and the cytological breakpoints predicted from these coordinates are 59B4;59B6.