Kernel density estimation for the spruce chromosomes. On each plot, the curve in bold is the kernel density function and the dotted curves represent the limits of the confidence interval. The horizontal line represents the expected density of the uniform gene distribution. The vertical dotted lines represent the boundaries of the gene-rich regions: chromosomal regions for which the lower limit of the confidence interval of the density function is above the uniform function.
Pavy et al. BMC Biology 2012 10:84 doi:10.1186/1741-7007-10-84