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. 2013 Oct 23;9(5):20130608. doi: 10.1098/rsbl.2013.0608

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© 2013 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — The non-homogeneous models recover the signal for a parallel adaptation to high temperatures within the across-site rate variation. (a) rRNA dataset. (b) Protein dataset. Ancestral temperatures for domain ancestors and for LUCA were estimated from ancestral compositions inferred with non-homogeneous models, either on all sites of the datasets (complete dataset) or on slow-evolving or fast-evolving sites only. ***p-value < 0.001. n.s. non-significant. Black bars, Bacteria; light grey bars, LUCA; dark grey bars, Archaea.