Extended Data Figure 6 |. Copy number landscape of melanocytes from normal human skin.

Copy number was inferred, as described, and segments (regions of equal copy number) are depicted, here, denoting gains (red) and losses (blue) for each melanocyte (rows). Note that copy number alterations over autosomes were rare, whilst the loss of one sex chromosome is a common occurrence. All X chromosome deletions in females affect the inactive X (see Supplementary Table 5).