
Detailed comparison of SNPs among isolates in SNP-rich regions near clone W08E3 on chromosome I (A) and clone H04J21 on chromosome III (B). Regions of ∼1 kb flanking the highly polymorphic clones were analyzed by directed sequencing at 1, 5, and 50 kb on each side in 10 natural isolates and N2. Polymorphisms within the tracts are shown vertically. The presence of a SNP is marked with a shaded square.











