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. 2019 Apr 2;3(2):217–236. doi: 10.1002/evl3.110

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© 2019 The Author(s). Evolution Letters published by Wiley Periodicals, Inc. on behalf of Society for the Study of Evolution (SSE) and European Society for Evolutionary Biology (ESEB).

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Maximum likelihood gene tree of Notch‐like receptors in Caenorhabditis. (A) Gene tree of the orthogroup containing C. elegans proteins LIN‐12 (CELEG.R107.8) and GLP‐1 (CELEG.F02A9.6) inferred using maximum likelihood (JCCMut+Γ substitution model). Elegans and Japonica groups are highlighted in red and blue, respectively. Duplication events are denoted by orange circles. Branch lengths represent the number of substitutions per sites; scale is shown. Bootstrap values are displayed as branch annotations, “^*” = 100. (B) Inferred events: (1) Duplication of ancestral Notch‐like receptor gene; (2) Duplication of glp‐1 gene; (3) Loss of one of the two duplicated glp‐1 genes in the Elegans group.