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. 2011 Aug 19;23(8):2821–2830. doi: 10.1105/tpc.111.085605

Table 2.

Statistical Tests of Synonymous (Ks) and Nonsynonymous (Ka) Substitution Rates and Mutation Rates between Cen8 Genes and Chr3S Noncentromeric Genes

Test Gene OS versus OG OS versus OB OG versus OB
Ks Chr3S genes 0.0287 (1515) 0.3000 (268) 0.3245 (238)
Cen8 genes 0.0056 (13) 0.2234 (7) 0.2219 (7)
Welch t test P value (one tail) 7.716E-11*** 0.00182** 3.62E-5***
Ka Chr3S genes 0.0113 (1515) 0.0436 (268) 0.0505 (238)
Cen8 genes 0.0043 (13) 0.0385 (7) 0.0347 (7)
Welch t test P value (one tail) 0.000828*** 0.3000 0.0796
Mutation rate (/bp/MY) Chr3S gene 0.0066 (1515) 0.00466 (268) 0.00486 (238)
Cen8 genes 0.00250 (13) 0.00393 (7) 0.00381 (7)
Welch t test P value (one tail) 1.3553E-5*** 0.169 0.0594

OB, O. brachyantha; OG, O. glaberrima; OS, O. sativa. **, significant level as P < 0.01; ***, significant level as P < 0.001. The numbers in parentheses indicate the number of genes used for each test.