Distribution of nucleotide diversity along the X chromosome of human populations.

<p>Nucleotide diversity is computed in 100 kb non-overlapping windows. Ampliconic regions [<a href="http://www.plosgenetics.org/article/info:doi/10.1371/journal.pgen.1005451#pgen.1005451.ref034" target="_blank">34</a>] as well as regions with no Neanderthal introgression [<a href="http://www.plosgenetics.org/article/info:doi/10.1371/journal.pgen.1005451#pgen.1005451.ref014" target="_blank">14</a>] are shown at the bottom. <a href="http://www.plosgenetics.org/article/info:doi/10.1371/journal.pgen.1005451#pgen.1005451.s005" target="_blank">S5 Fig</a> shows all 14 populations.