Relaxation of selective constraints on avian mitochondrial DNA following the degeneration of flight ability

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Figure 2.
Figure 2.

Negative correlation between mitochondrial Ka/Ks ratios and locomotive speed. (A) Ordinary linear regressions of Ka/Ks ratios to loge speed for 27 avian species, raw cross-species values, P = 0.016, R = 0.459. (B) Phylogenetically independent contrasts for six pairs of birds, P = 0.109, R = 0.717. (C) Ordinary linear regressions of Ka/Ks ratios to loge speed for 131 mammalian species, raw cross-species values, P < 0.001, R = 0.321. (D) Phylogenetically independent contrasts for 36 pairs of mammals, P < 0.001, R = −0.666.

This Article

  1. Published in Advance July 17, 2009, doi: 10.1101/gr.093138.109 Genome Res. 19: 1760-1765

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