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(1)BSC877 predicted from the Release 5 genomic coordinates of the progenitor PBac{WH}f04451b and P{XP}norpAd05473 transposable element insertion sites are X:3822414 ;4218814..4218913 and the cytological breakpoints predicted from these coordinates are 3F7;4B6.