family sample) to illustrate roughly their chromosomal positions with respect to the linkage peak. Interestingly, none of these genes was located within a 1 LOD drop of the primary, centromeric linkage peak. Rather, those genes in closest proximity to the linkage peak were clustered on either side of the peak. In addition, consistent with previous reports of linkage across the chromosome, additional genes surviving permutation testing were located across chromosome 2.
