Exelixis, Inc. determined the insertion site ofthe progenitor PBac{WH}f03562 to be at Release 3 genomic coordinate 14988104 on chromosome arm 2L. The Gene Disruption project determined the insertion site of the progenitor PBac{WH}f03562 to be at Release 3 genomic coordinate 14988091 on arm 2L. This corresponds to 35B8 on the Release 5 genome map. The predicted position of P{XP}d09327 on the Release 5 map is 35C1. Consequently, the cytological breakpoints of P+PBac{XP5.WH5}BSC299 are predicted to be 35B8;35C1.