title: Evolutionary biology. A twofold tragedy unfolds.
authors.forename: P
authors.initials: P
authors.lastname: Hammerstein
mesh_terms: D000818:Animals; D005075:Biological Evolution; D003163:Competitive Behavior; D003299:Cooperative Behavior; D006801:Humans; D008540:Meiosis / Q000502:physiology; D008954:Models, Biological