title: [Identification of ancestral genes untroducing incongruence between gene and species tree].
abstract: The article introduces two novel approaches to detect potential incongruence between the protein family tree and the species tree. The first approach implements substitution of a known mapping of gene tree G into species tree S with somewhat analogous multivalued G-into-S "mapping". The second approach is based on elementary concepts from the fuzzy-set theory. Detailed description of the two corresponding algorithms is provided with demonstration of their performance on a model example and on three biological COGs.
authors.forename: K Iu
authors.initials: KIu
authors.lastname: Gorbunov
authors.forename: V A
authors.initials: VA
authors.lastname: Liubetskiĭ
mesh_terms: D000465:Algorithms; D001419:Bacteria / Q000145:classification / Q000235:genetics*; D001426:Bacterial Proteins / Q000145:classification* / Q000235:genetics*; D019143:Evolution, Molecular; D005798:Genes, Bacterial / Q000235:genetics; D010802:Phylogeny
chemical_list: D001426:Bacterial Proteins