The size distribution of inversions in cells exposed to 2 Gy of either Fe ion or X-ray radiation. Panels A and B are G1 and M phase cells exposed to Fe ion radiations. Panels C and D are exposed to X-ray. The value of 0 indicts values 0–20 megabases in the main figures. The inlays are a small segment of the original figure highlighting the smaller than 30 megabases. The value of 2 in the inlay indicts values of 0–2 megabases.