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Table 1 Abundance and proportion of protein genes of a given fish species with significantly lower or higher distance to the human ortholog than other species. The total number of comparisons was N = 2466. a denotes genes with significantly lower or higher distance for both pufferfish species

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

Tetraodon nigroviridis Takifugu rubripes Danio rerio Oryzias latipes Pufferfishesa
lower higher lower higher lower higher lower higher lower higher
25 35 58 81 80 64 208 26 19 14
∑ = 60 ∑ = 139 ∑ = 144 ∑ = 234 ∑ = 33
1.01% 1.42% 2.35% 3.28% 3.24% 2.60% 8.43% 1.05% 0.77% 0.57%
∑ = 2.43% ∑ = 5.64% ∑ = 5.84% ∑ = 9.49% ∑ = 1.34%