Fig. 2.

Common haplotypes of the NPR1 gene. There are three common haplotypes, designated “CT6”, “CT10”, and “CT11”, encompassing polymorphisms 1, 2, 5, and 6 in the 5’ region of the gene (Fig. 1). There are three common haplotypes, “3-plus”, “4-plus”, and “4-minus”, in the 3’ region of the gene encompassing polymorphisms 8–10 in Fig. 1. The 5’ and 3’ haplotypes are not linked; they flank a region in intron 19 that contains a highly variable number of dinucleotide repeats. Approximate distances between the polymorphic sites are shown. The frequencies of the 5’ haplotypes are from site 1