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Table 1 Nucleotide substitution rates of quartets in the P. trichocarpa and S. brachista genomes

From: Conversion between duplicated genes generated by polyploidization contributes to the divergence of poplar and willow

  Converted genes Nonconverted genes P value (T test)
Paralogs in P. trichocarpa Pn 0.075 0.085 0.587
Ps 0.220 0.264 0.394
Pn/Ps 0.380 0.343 0.432
Paralogs in S. brachista Pn 0.113 0.130 0.577
Ps 0.314 0.347 0.103
Pn/Ps 0.336 0.295 0.197
Orthologs between P. trichocarpa and S. brachista Pn 0.231 0.058 2.02E-46
Ps 0.461 0.163 1.10E-55
Pn/Ps 0.523 0.328 3.61E-11