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Table 2 Number of evolutionary breakpoint intervals per chromosome and their characteristics.

From: Gene synteny comparisons between different vertebrates provide new insights into breakage and fusion events during mammalian karyotype evolution

Chromosome Number of
intervals per
breakpoint
chromosome
Length of all
breakpoint
intervals in Mb
(% whole chromosome)
Median length
of breakpoint
interval (Mb)
Average length
of breakpoint
interval (Mb)
Gene density,
entire chromosome
(genes/Mb)
1 47 11.89 (4.84) 0.11 0.25 8.67
2 46 17.87 (7.34) 0.15 0.40 5.66
3 45 13.60 (6.82) 0.14 0.30 5.58
4 21 8.78 (4.57) 0.12 0.42 4.35
5 42 18.24 (10.09) 0.17 0.43 5.11
6 28 6.24 (3.67) 0.12 0.23 6.48
7 37 8.21 (5.18) 0.11 0.23 6.25
8 30 9.94 (6.80) 0.21 0.34 5.06
9 20 6.31 (4.56) 0.23 0.33 6.54
10 20 7.39 (5.44) 0.11 0.39 6.05
11 31 8.58 (6.37) 0.16 0.28 10.36
12 17 3.06 (2.32) 0.13 0.18 8.34
13 9 2.32 (2.03) 0.14 0.26 3.14
14 11 2.87 (2.69) 0.11 0.26 6.23
15 16 2.12 (2.10) 0.06 0.13 6.57
16 12 4.21 (4.73) 0.03 0.38 10.33
17 31 5.63 (7.13) 0.09 0.19 15.70
18 11 7.71 (10.16) 0.59 0.77 3.86
19 17 1.49 (2.34) 0.05 0.09 22.47
20 20 3.21 (5.14) 0.07 0.17 9.72
21 6 0.46 (0.98) 0.04 0.08 5.79
22 9 1.60 (3.23) 0.12 0.18 10.28
sum 526 151.73 0.12 0.29