Figure 1.Plots of the distribution of trait linkage probability in the population of F2 rats (bred by reciprocal cross of OXYS and WAG) at age 3-4 months. The linkage of: (panel A) retinopathy; (panel B) cataract with markers on chromosome 1 was analyzed. Dotted vertical line at LOD = 2.0 is the threshold for suggestive statistical significance. The OXYS regions introgressed into WAG rats in the construction of congenic strains are shown as inserts to the left of the linkage map.
