On the founder effect and the evolution of altruistic traits.
D000818:Animals; D001042:Aphids / Q000502:physiology; D018407:Bacterial Physiological Phenomena; D001522:Behavior, Animal / Q000502:physiology*; D005075:Biological Evolution; D004777:Environment; D005658:Fungi / Q000502:physiology; D005787:Gene Frequency; D005828:Genetics, Population; D006379:Helping Behavior; D007313:Insecta / Q000502:physiology; D008433:Mathematics; D008954:Models, Biological; D012919:Social Behavior; D014863:Wasps / Q000502:physiology