title: Extinction:  bad genes or bad luck?
authors.affiliation: University of Chicago, USA.
authors.forename: D
authors.initials: D
authors.lastname: Raup
mesh_terms: D000220:Adaptation, Biological; D000818:Animals; D005075:Biological Evolution; D005580:Fossils; D010163:Paleontology; D011336:Probability; D012641:Selection, Genetic; D013997:Time Factors