An Annotated Catalog of Inverted Repeats of Caenorhabditis elegans Chromosomes III and X, with Observations Concerning Odd/Even Biases and Conserved Motifs

Table 3.

Counts and Percentages of Genic vs. Intergenic Sequences for Non-AT-Rich and AT-Rich Perfect Loopless Inverted Repeats from Size 4 bp to 25 bp in Chromosomes III and X

Length Non-AT-Rich AT-Rich
genic % genic intergenic % intergenic genic % genic intergenic % intergenic
a. Chromosome III
4 101986 49 107454 51 132454 44 166315 56
5 170671 49 179055 51 116919 43 153498 57
6 35749 49 36731 51 35258 42 48209 58
7 56782 47 62779 53 30219 42 41066 58
8 11985 47 13287 53 9148 43 12206 57
9 17769 45 21757 55 7517 44 9741 56
10 4157 44 5210 56 2692 42 3734 58
11 5941 44 7494 56 2279 43 3077 57
12 1457 42 2020 58 898 42 1253 58
13 2203 43 2960 57 846 43 1144 57
14 610 40 899 60 408 43 531 57
15 781 42 1063 58 328 43 427 57
16 270 45 327 55 156 39 246 61
17 244 39 386 61 125 42 174 58
18 79 36 138 64 71 36 128 64
19 96 38 160 63 46 45 56 55
20 44 41 64 59 36 31 80 69
21 34 32 72 68 13 33 27 68
22 13 21 48 79 14 22 50 78
23 13 30 30 70 2 50 2 50
24 26 60 17 40 10 23 34 77
25 7 44 9 56 1 25 3 75
b. Chromosome X
4 191546 42 265782 58 205155 34 395292 66
5 327528 41 473331 59 167322 33 333276 67
6 66200 40 97509 60 50884 33 105333 67
7 103472 40 158151 60 41155 32 86530 68
8 21744 39 34537 61 13774 32 29074 68
9 31800 38 51586 62 10329 32 22314 68
10 7222 37 12109 63 4312 32 9040 68
11 9845 36 17230 64 2828 32 5982 68
12 2450 36 4310 64 1711 32 3628 68
13 3104 34 6084 66 854 32 1783 68
14 870 34 1680 66 924 33 1913 67
15 1006 32 2100 68 253 31 561 69
16 291 31 651 69 659 34 1273 66
17 337 31 766 69 94 35 173 65
18 120 29 292 71 519 35 965 65
19 139 31 307 69 28 33 58 67
20 61 27 161 73 438 36 786 64
21 52 33 107 67 11 46 13 54
22 32 26 93 74 386 37 671 63
23 21 35 39 65 2 33 4 67
24 19 26 55 74 342 37 587 63
25 8 32 17 68 1 33 2 67

  • For lengths greater than 25 bp, low sample size prevents simple extrapolation of trends. Note that proportionally less of chromosome III is comprised of intergenic sequences and therefore the two chromosomes are not strictly comparable.

This Article

  1. Genome Res. 10: 1381-1392

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