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Fig. 1 | BMC Bioinformatics

Fig. 1

From: Reconciliation feasibility in the presence of gene duplication, loss, and coalescence with multiple individuals per species

Fig. 1

Evolutionary models and reconciliation structures. a In the duplication-loss model, incongruence between the gene tree (black) and species tree (blue) can be explained using gene duplications (yellow star) and gene losses (red “x”). b In a multispecies coalescent model, incongruence between the gene tree and species tree can be explained due to incomplete lineage sorting (ILS). c The unified model proposed by Rasmussen and Kellis [36] combines the duplication-loss and multispecies coalescent models. For an alternative view of this model, in which the traditional duplication-loss and coalescent processes are decoupled, see Additional file 1: Figure S1. d The LCT combines the species tree, locus tree, gene tree, and reconciliations between them into a single structure. [Figure and caption adapted with permission from Wu et al. [37] and Rasmussen and Kellis [36]]

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