SNP sequences identified among w;iso2;iso3 and pair-wise combinations of 17 P element strains. Identified SNPs are listed according to the STS from which they were derived. The approximate cytological location of each STS is indicated. Cytological locations are derived from the P1-based genome physical map (Kimmerly et al. 1996), and confirmed by comparison of the STS sequence to a database of Release 1 genome sequences with associated cytological locations (Adams et al. 2000). The polymorphic bases in each strain are indicated in capital letters and ~10 bp of flanking sequence is indicated in lower case. The cytological locations of P element insertions (designated as Q1040, etc.) are indicated, and SNP sequences are listed between each pair of P element strains that can be used for eye color-based selection of recombinants in that interval. All polymorphisms between the w;iso2;iso3 and P element strains were initially detected by Denaturing HPLC.