Identification of chromosomal regions of significant extremes in gene expression, gene density, intron length, and GC content. (A) Ridgeograms of the gene expression of all human chromosomes showing the ridges (red) and antiridges (blue) as function of window size. The horizontal axis of each triangle gives the position of the TUs along each chromosome (left, top of the p arm; right, distal end of the q arm). The vertical axis gives the window size, increasing from window size 19 until the maximum possible window size for each chromosome; (B) Ridgeogram of chromosome 6 together with significance plots of extremes in GC content, inverse intron length and gene density.
