title: Polyphyletic gene losses can bias backtrack characterizations of the cenancestor.
authors.affiliation: Facultad de Ciencias, Universidad Nacional Autónoma de México, Apartado Postal 70-407, Cd. Universitaria, 04510 México, D. F. México.
authors.forename: A
authors.initials: A
authors.lastname: Becerra
authors.forename: S
authors.initials: S
authors.lastname: Islas
authors.forename: J I
authors.initials: JI
authors.lastname: Leguina
authors.forename: E
authors.initials: E
authors.lastname: Silva
authors.forename: A
authors.initials: A
authors.lastname: Lazcano
mesh_terms: D000818:Animals; D019143:Evolution, Molecular; D005796:Genes; D016678:Genome; D006801:Humans; D010802:Phylogeny