Figure 3From: Next generation sequencing analysis reveals a relationship between rDNA unit diversity and locus number in Nicotiana diploidsNumber of ITS1 variants occurring in each of five abundance categories for N. sylvestris or N. tomentosiformis. Only SNPs that exceeded 1% of total Illumina reads in the appropriate species were considered. The graph reports the frequency of the most abundant SNPs – i.e. in N. sylvestris there is one major SNP that occurs in 15.5% of reads (black column) plus several minor SNPs occurring at lower relative abundance.Back to article page