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Table 5 Intra- and interspecific variation of starch synthases in A. thaliana and A. lyrata

From: Intraspecific sequence variation and differential expression in starch synthase genes of Arabidopsis thaliana

     Number of fixed differences Number of polymorphic sites
  π K π/K ratio total syn nonsyn total syn nonsyn
AtSSI 0.0115 0.0152 0.7551 203 62 21 110 21 9
AtSSII 0.0014 0.0049 0.2895 162 52 38 30 6 13
AtSSIII 0.0056 0.0085 0.6580 175 53 31 106 30 34
AtSSIV 0.0028 0.0069 0.4128 274 87 43 68 14 17
AtGBSS 0.0045 0.0077 0.5822 134 37 14 49 16 12
  1. Measures for complete gene sequences (exons and introns). π = nucleotide diversity within accessions of A. thaliana; K = nucleotide divergence between A. thaliana and A. lyrata; π/K = ratio of diversity and divergence. Number of fixed differences between A. thaliana and A. lyrata, as well as number of polymorphic sites among A. thaliana accessions, both subdivided into total, synonymous (syn), and nonsynonymous (nonsyn) substitutions.