Table 4.

Identification and classification of SNPs in the five mutant plants.

Number of mutants with SNP	SV class	SNPs in intergenic regions	SNPs within gene (promoter, exon, intron)
SNPs unique to 1 plant	3	74,534	17,761
SNPs shared by 2 plants	2	14,515	2,376
SNPs shared by 3 plants	2	7,190	1,073
SNPs shared by 4 plants	2	4,159	744
SNPs shared by 5 plants	2	2,033	409

SNPs shared by more than one mutant plant (Class 2) represent natural variation existing in the Red Hawk cultivar. SNPs unique to a single mutant (Class 3) are likely caused by FN mutagenesis. SNPs within a gene region are more likely to impact gene expression patterns than those in intergenic regions.