Figure 2.

Centromeric array size variation between two geographical locations

(A) Comparison of centromeric array size in Mb for D6Z1, D7Z2, D11Z1, D18Z1, and DXZ1 in normal tissue from samples divided by geographical origin for 37 individuals from China (red) and 39 individuals from the UK and the US (blue). The distributions in the two groups differed significantly (p < 0.001) in D6Z1, D11Z1, and DXZ1 centromeric arrays using the Wilcoxon-Mann-Whitney two-sample rank-sum test. D18Z1 and D7Z2 centromeric arrays did not show a significant difference.

(B) The y axis for D7Z2 is expanded, relative to the presentation in (A), so that the data can be better visualized, because D7Z2 is much smaller than the other arrays.

(C) The minimum, median, maximum, and range of array sizes are shown in Mb for each array, divided by geographical region of origin.