Figure 1.

Whole-genome comparison of human and chimpanzee copy number variation. For each autosome, relative intensity log₂ ratios are superimposed for all 30 chimpanzees compared with Clint (top) and all 30 humans compared with NA10851 (middle). Log₂ ratios for the interspecies comparison of Clint vs. NA10851 are shown at the bottom. Clones in nonvariable regions are depicted as gray circles (log₂ ratios close to 0). Clones reporting copy number change with the CNVfinder algorithm are shown in orange, blue, and green/black for chimpanzees, humans, and the interspecies comparison, respectively. Fixed human–chimpanzee CNDs are indicated by the larger black circles on the interspecies profiles. Large gaps in clone coverage correspond to centromeric regions.