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Table 6 All fish specific paralogous pairs of proteins discovered in this study with significantly lower or higher distance to the human ortholog than other fish species. "dR/dC>1" represents the number of pairs where at least one paralog is under positive Darwinian selection according to the method of Hughes et al. (1990). "rel. rate sign." represents the number of pairs where at least one paralog shows a significantly higher rate of evolution according to the relative rate test of Tajima (1993).

From: Many genes in fish have species-specific asymmetric rates of molecular evolution

  dR/dC>1 rel. rate sign. total number of pairs
lower distance 13 44.83% 16 55.17% 29
higher distance 1 5.00% 8 40.00% 20
14 28.57% 24 48.98% 49