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Table 4 Observed and expected densities of SSRs in different genic regions

From: Distinct patterns of SSR distribution in the Arabidopsis thalianaand rice genomes

  5'-UTR Exon Intron 3'-UTR
Arabidopsis     
Mononucleotide 434.6 (12.3) 3.3 (4.8) 321.6 (65.7) 33.9 (3.2)
Dinucleotide 664.2 (20.4) 7.3 (12.9) 122.7 (33.9) 12.3 (3.1)
Trinucleotide 702.7 (7.7) 218.7 (4.5) 90.9 (17.6) 17.1 (1.4)
Tetranucleotide 105.8 (27.7) 3.3 (17.9) 58.7 (58.9) 8.7 (4.5)
Rice     
Mononucleotide 248.1 (6.1) 4.2 (3.7) 132.9 (4.9) 222.8 (11.5)
Dinucleotide 500.6 (13.2) 16.1 (11.5) 70.9 (12.8) 88.5 (16.9)
Trinucleotide 1670.6 (4.5) 421.4 (3.9) 182.3 (4.4) 153.2 (6.5)
Tetranucleotide 337.4 (18.7) 7.6 (16.1) 46.2 (17.7) 121.6 (24.3)
  1. The unit is per mega-base pairs. The numbers listed in parentheses are the expected densities of various periods in different regions.