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. 2010 Jan 15;59(2):212–225. doi: 10.1093/sysbio/syp104

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© The Author(s) 2010. Published by Oxford University Press on behalf of Society of Systematic Biologists.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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FIGURE 1. — Mapping of the thymidylate synthase enzymes ThyA and ThyX onto the species tree. Posterior probabilities of an LGT event are coded onto the edges. A black line represents a probability of LGT higher than 0.75, and a dashed line represents a probability between 0.5 and 0.75. The states at the extant organisms are color coded onto the tips of the tree as follows: ThyA in red, ThyX in blue, and cases in which an organism codes both ThyA and ThyX simultaneously are in violet. Colored arrows represent an LGT event, with the color of the arrow standing for the gained gene. The tree is presented using the FigTree software (http://tree.bio.ed.ac.uk/) as a cladogram, and edge lengths are not shown to scale. Cren, Crenarchaeota; Nano, Nanoarchaeota.