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. 2011 Sep 6;3:812–829. doi: 10.1093/gbe/evr028

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© The Author(s) 2011. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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FIG. 6.— — Distribution of d_N/d_S ratio between the Drosophila melanogaster and D. simulans genes. A total of 5,314 protein-coding genes having one-to-one orthologs among 12 Drosophila species were used. The d_N and d_S values were computed by the modified Nei-Gojobori method (Zhang et al. 1998) with a transition/transversion ratio of 2.