Table 2.

TSD sequences are A-rich

TSD composition	Observed*	Expected†
0-10% As	0.1%	2.7%
10-20% As	2.5%	26.6%
20-30% As	8.6%	23.8%
30-40% As	31.5%	36.8%
40-50% As	18.0%	7.4%
50-60% As	28.5%	2.7%
60-70% As	5.2%	0.1%
Over 70% As	5.5%	0.0%

^*TSDs of length 15 nucleotides without mismatches were classified according to their A content. ^†Monte Carlo simulation was used to generate random 15-nucleotide sequences representative of the nucleotide population of the human genome. Only 10% of these randomly generated sequences were equal to or greater than the average A content of the TSDs.