title: The opportunity for natural selection on multigene families.
authors.affiliation: Department of Biology, Boston University, Massachusetts 02215.
authors.forename: S M
authors.initials: SM
authors.lastname: Williams
mesh_terms: D000818:Animals; D005785:Gene Conversion; D014644:Genetic Variation; D006801:Humans; D005810:Multigene Family; D009154:Mutation; D011995:Recombination, Genetic; D012641:Selection, Genetic