Abundance of perfect and imperfect trinucleotide repeats in chimpanzee chromosome 18

ALLCODINGINTRONINTERGENIC
perfectimperfectperfectimperfectperfectimperfectperfectimperfect
TLTNLPMbNPMbTLTNLPMbNPMbTLTNLPMbNPMbTLTNLPMbNPMbTLTNLPMbNPMbTLTNLPMbNPMbTLTNLPMbNPMbTLTNLPMbNPMb
aac 14496 938179.1011.59 21032 929259.8511.48 12 119.291.61 12 119.291.61 4485 286191.4812.21 6340 283270.6712.08 9372 611164.7310.74 13722 605241.1910.63
aag 4044 26649.963.29 7689 23895.002.94 24 238.583.21 41 265.913.21 1191 7950.853.37 2578 69110.062.95 2571 16645.192.92 4542 14879.832.60
aat 20496 1326253.2316.38 30345 1293374.9115.97 0 00.000.00 0 00.000.00 5757 373245.7815.92 8249 362352.1715.46 13884 900244.0315.82 20735 881364.4515.48
acc 2982 22336.842.75 4970 20261.402.50 51 381.984.82 57 391.634.82 1068 7545.603.20 2569 58109.682.48 1704 13229.952.32 2083 12836.612.25
acg 12 10.150.01 15 10.180.01 0 00.000.00 0 00.000.00 12 10.510.04 15 10.640.04 0 00.000.00 0 00.000.00
act 663 478.190.58 1129 4613.950.57 0 00.000.00 0 00.000.00 165 117.040.47 183 117.810.47 453 337.960.58 872 3215.330.56
agc 3216 23539.732.90 4021 23349.682.88 174 14279.7022.50 301 14483.8522.50 987 6842.142.90 1197 6751.102.86 1899 14233.382.50 2322 14140.812.48
agg 5217 40364.464.98 12269 350151.584.32 195 15313.4624.11 360 15578.7024.11 1746 13674.545.81 4146 119177.005.08 2967 22952.154.03 7296 196128.243.44
atc 3603 24044.522.96 6329 22478.192.77 48 477.166.43 51 481.986.43 777 5233.172.22 1098 5246.882.22 2673 17646.983.09 5032 16188.442.83
ccg 870 6010.750.74 2363 5729.200.70 123 9197.7214.47 212 9340.7914.47 108 84.610.34 651 827.790.34 516 359.070.61 1149 3220.200.56
TL: total length of repeats in class; TN: total number of repeats in class;
LPMb: length per megabase of repeats in class; NPMb: number of repeats in class per megabase

Statistical analysis (contingency test results)

Data points with the smallest value were exluded iteratively until all remaining data contributes more than 5% of the total. Data sets were normalized to 100%

FeatureProbabilityChiSquareDegrees of freedomused / all data pointsExcluded repeats
All sequences
length per megabase0.9341.30856 / 10 acg, act, agc, ccg
number per megabase1.0000.10367 / 10 acg, act, ccg
Coding regions
length per megabase0.8391.42945 / 10 aac, aag, aat, acg, act
number per megabase1.0000.00045 / 10 aac, aag, aat, acg, act
Introns
length per megabase0.6182.65145 / 10 acg, act, agc, atc, ccg
number per megabase0.9990.24556 / 10 acg, act, atc, ccg
Intergenic regions
length per megabase0.8411.41845 / 10 acc, acg, act, agc, ccg
number per megabase1.0000.11167 / 10 acg, act, ccg