Scer\FRT-mediated recombination between the two progenitor insertions has resulted in the deletion of the genomic sequence between them.
FLP-mediated site-specific recombination between P{RS5}CG83795-HA-1806 and PBac{WH}pydf05901 generates a 37kb genomic deletion that eliminates the coding sequence of all known and predicted pyd isoforms and also deletes an adjacent locus, CG8379.