Identification of Ancestral Genes That Introduce Incongruence between Protein- and Species Trees
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Two new approaches to detecting potential incongruence between a protein family tree and a species tree are considered. The first approach is based on the substitution of a known mapping of the gene tree G into the species tree S with a somewhat analogous multivalued G-into-S mapping. The second approach is based on the elementary concepts of the fuzzy set theory. Two algorithms corresponding to these approaches are described in detail, and their implementation is shown using a simulation example and three protein families from the database of clusters of orthologous protein groups (COGs).
Key wordshorizontal gene transfer search for horizontal transfers evolutionary event reconstruction of evolution phylogenetic species tree phylogenetic protein tree tree reconciliation
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