Isolation and characterization of Df(2R)BSC309
Stacey Christensen and Kevin Cook
Bloomington Stock Center
Indiana University
Df(2R)BSC309 was isolated as a FLP recombinase-induced recombination event involving PBac{WH}CG15706f06892 and P{XP}d04585. The deletion was isolated as a chromosome lacking miniwhite markers in progeny of P{hsFLP}1, y1 w1118; PBac{WH}CG15706f06892/P{XP}d04585 males crossed to w1118; P{hs-hid}2, wgSp-1/CyO females. These males were heat shocked as larvae as described in Parks et al., Nature Genetics 36: 288-292, 2004 (FBrf0175003). This cross and crosses in preceding and succeeding generations maintained the original genetic background of the Exelixis insertion stocks (Thibault et al., Nature Genetics 36: 283-287, 2004; FBrf0175002). The recombination event generated the genetic element P+PBac{XP5.WH5}BSC309 from the segment of PBac{WH}CG15706f06892 to the left of its FRT site and the segment of P{XP}d04585 to the right of its FRT site. Its presence was verified using the PCR methods and primers described in Parks et al. The cytological breakpoints of Df(2R)BSC309 predicted from the Release 5 genomic coordinates of the transposable element insertions sites are 52F11;53B1. It failed to complement Khc8 and Df(2R)Jp8.