Figure 1. Distribution of CNEs along the Human Genome.

(A) Each CNE is plotted relative to its position along each of human Chromosomes 1 to 9 (data for other chromosomes not shown). The y-axis represents length along the chromosome (in megabases).

(B) Distribution of the fraction of CNEs that are within certain distances of each other; e.g., 85% of the distances between CNEs are less than or equal to 370 kb. χ² tests were carried out by comparing observed cluster sizes with those generated randomly for each chromosome (see Materials and Methods).