Table 2.
Densities of the most abundant SSR (mono- and dinucleotide) types in different regions
| Mononucleotide* | Dinucleotide† | |
| Arabidopsis | ||
| 5'UTR | A: 432.7 (99.6%) | AG: 593.1 (89.3%) |
| C: 1.9 (0.4%) | AC: 48.8 (7.4%) | |
| Exons | A: 3.2 (95.9%) | AG: 6.4 (88.3%) |
| C: 0.1 (4.1%) | AT: 0.5 (7.2%) | |
| Introns | A: 320.3 (99.6%) | AT: 53.9 (43.9%) |
| C: 1.3 (0.4%) | AG: 42.9 (35%) | |
| 3'UTR | A: 339 (99.7%) | AT: 52.4 (42.6%) |
| C: 1 (0.3%) | AG: 48.2 (39.2%) | |
| Genome | A: 292.6 (98.8%) | AT: 55.9 (50.1%) |
| C: 3.7 (1.2%) | AG: 42.6 (38.2%) | |
| Rice | ||
| 5'UTR | A: 182.9 (73.7%) | AG: 380 (75.9%) |
| C: 65.2 (26.3%) | AT: 60.3 (12%) | |
| Exons | C: 2.3 (55.4%) | AT: 8.1 (50.1%) |
| A: 1.9 (44.6%) | AG: 7.3 (45.2%) | |
| Introns | A: 116.8 (87.9%) | AG: 32.3 (45.6%) |
| C: 16.1 (12.1%) | AT: 22 (31.1%) | |
| 3'UTR | A: 213.4 (95.8%) | AT: 34.9 (39.4%) |
| C: 9.4 (4.2%) | AG: 28.5 (32.2%) | |
| Genome | A: 127.7 (86.2%) | AG: 51.8 (43.6%) |
| C: 20.4 (13.8%) | AT: 42.6 (35.9%) |
Each of the repeat types contains all circular permutations of not only the sequence in question, but also of the complement of the sequence. For example, 'AG' represents 'AG', 'GA', 'CT', and 'TC'. The unit is per mega-base pairs. The percentage indicates how much percent of all repeats of this period are of this type. *Two possible permutations; †four possible permuations.