Figure 1.

Contig of YACs (Y), BACs (B), and P1s (P) across the kat^2J locus on chromosome 8. The triple lines across the chromosome represent the proximal and distal recombination (Rec) events in the animals 584 (mouse with a proximal recombination event) and 161 (mouse with a distal recombination event). The hatched box represents the nonrecombinant region that must contain the kat^2J mutation. All the libraries were screened by PCR. The solid circles represent the chimeric ends of the YACs.