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 insertion site of the progenitor PBac{WH}Ptenf04844 is Release 5 genomic coordinate 10260017--10260116 on arm 2L, which corresponds to 31B1. Exelixis, Inc. determined the insertion site of the progenitor P{XP}d05552 to be Release 3 genomic coordinate 10314218 on chromosome arm 2L. This corresponds to 2L:10321809 and 31D7 on the Release 5 genome map. Consequently, the breakpoints of Df(2L)BSC827 predicted from the Release 5 genomic coordinates of the progenitor transposable element insertion sites are 2L:10260017--10260116 ;10321809 and the cytological breakpoints predicted from these coordinates are 31B1;31D7.