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. 2017 Dec 18;115(5):1009–1014. doi: 10.1073/pnas.1717502115

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Copyright © 2018 the Author(s). Published by PNAS.

This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND).

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Fig. 2. — W. smithii: DGE on the horizontal axis is associated with selection on blood feeding, and DGE on the vertical axis is associated with the evolution of nonbiting. The 902 biting genes are concentrated in the lower left; the 478 nonbiting genes are concentrated in the upper right. The orthogonal axis of 79 genes shows DGE not associated with selection on blood feeding. Note that each gene appears on this plot only once, factoring out any DGE between populations unrelated to direct selection on blood feeding.