Figure 1.

Inversion detection by invClust on five known inversions: three clusters are clearly observed for different HapMap III populations, corresponding to NI/NI: non-inverted homozygous; NI/I: inverted-heterozygous; and I/I: inverted-homozygous. Population frequencies are reported on the top right corner. European populations CEU and TSI are grouped into EU, and CHB, JPT and CHD into AS. Note that for inv-17q21 (top left) no signal was detected within YRI and MKK. Only relative comparisons with other populations indicate that their inversion frequencies are null.