Correlation coefficient between mSNP density in 125 kb-16 Mb of sequence flanking clusters of piRNA elements and the number of piRNA elements within each cluster. There was a significant positive correlation between the two variables for flank sizes of 125-8 Mb. For each flank size the point estimate of correlation coefficient is shown and the 95% confidence interval estimated by 10,000 bootstrap estimates of the correlation coefficient.
Sigurdsson et al. BMC Genetics 2012 13:31 doi:10.1186/1471-2156-13-31