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. 2015 Dec 16;16(Suppl 19):S6. doi: 10.1186/1471-2105-16-S19-S6

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Copyright © 2015 Chauve et al.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Example of an adjacency forest predicted from two reconciled gene trees. (Left) Species tree S, with two extant species A and B and an ancestral species C. (Middle) Two reconciled gene trees G₁and G₂, with four extant genes in genome A, four extant genes in genome B and three ancestral genes in genome C. The set of extant adjacencies is (A₁A₃, B₁B₃, A₂A₄, B₂B₄) (Right) Parsimonious adjacency forest F composed of two adjacency trees. Blue dots are speciation nodes. Leaves are extant (species, genes, adjacencies), except when labelled with a red cross (gene loss). Green squares are (gene or adjacency) duplication nodes. Gene labels refer to the species of nodes. Every node of the adjacency tree is labelled by a couple of nodes from gene trees. Figure adapted from [5].