article: Adaptation
links: Heredity Toxin Fitness Trematoda Evolution Camouflage Phenotype Display (zoology) Embryology Developmental biology Larva Mimicry Adaptive radiation Julian Huxley India Neanderthal Speciation Physiology Theodosius Dobzhansky Sarcopterygii Defence against predation Stephen J. Gould Sexual selection Ernst Mayr Pavo cristatus Natural selection