Table 2 Distribution of SSR types in coding DNA sequences (CDSs), untranslated regions (UTRs), and genomic DNA of the apple genome
Repeat | Region | Repeat length (bp) | Total | Frequency (%) | |||
|---|---|---|---|---|---|---|---|
| Â | Â | <30 | 30-40 | 40-50 | >50 | Â | Â |
Dimer | CDS | 76 | 0 | 0 | 0 | 76 | 0.27 |
| Â | UTR | 2098 | 598 | 158 | 153 | 3007 | 10.54 |
| Â | Genomic | 10860 | 3817 | 1755 | 1010 | 17442 | 61.12 |
Trimer | CDS | 260 | 5 | 0 | 0 | 265 | 0.93 |
| Â | UTR | 425 | 22 | 3 | 2 | 452 | 1.58 |
| Â | Genomic | 2411 | 211 | 69 | 95 | 2786 | 9.76 |
Tetramer | CDS | 10 | 0 | 0 | 0 | 10 | 0.04 |
| Â | UTR | 158 | 11 | 1 | 1 | 171 | 0.60 |
| Â | Genomic | 1472 | 107 | 22 | 11 | 1612 | 5.65 |
Pentamer | CDS | 16 | 0 | 0 | 0 | 16 | 0.06 |
| Â | UTR | 223 | 7 | 0 | 0 | 230 | 0.81 |
| Â | Genomic | 1658 | 19 | 1 | 2 | 1680 | 5.89 |
Hexamer | CDS | 136 | 8 | 1 | 1 | 146 | 0.51 |
| Â | UTR | 248 | 10 | 2 | 0 | 260 | 0.91 |
| Â | Genomic | 355 | 20 | 9 | 1 | 385 | 1.35 |