FIGURE 2. SNP frequency in the first 50 kb of finished sequences for strains 129 as compared to the B6 assembly.
From the following article:
The mosaic structure of variation in the laboratory mouse genome
Claire M. Wade, Edward J. Kulbokas, III, Andrew W. Kirby, Michael C. Zody, James C. Mullikin, Eric S. Lander, Kerstin Lindblad-Toh and Mark J. Daly
Nature 420, 574-578(5 December 2002)
doi:10.1038/nature01252
We note the bimodal distribution of observed SNPs (black) and the difference from the expected Poisson distribution (white) with an average of 14 SNPs per 10 kb (the observed rate across the entire data set). This indicates a very non-uniform distribution of SNPs in the genome with the presence of regions with a high SNP rate (
45 SNPs per 10 kb) and regions with a low SNP rate (0.5 SNPs per 10 kb).