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  1. Evolution | Definition, History, Types, & Examples | Britannica

    3 days ago · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to …

  2. Evolution - Natural Selection, Adaptation, Genetics | Britannica

    3 days ago · Biological evolution is the process of change and diversification of living things over time, and it affects all aspects of their lives— morphology (form and structure), physiology, …

  3. Biology - Evolution, Genetics, Species | Britannica

    Aug 22, 2025 · Evidence to support the theory of evolution has come primarily from the fossil record, from comparative studies of structure and function, from studies of embryological …

  4. Biology - Evolution, Natural Selection, Adaptation | Britannica

    Sep 30, 2025 · A complete theory of evolution was not announced, however, until the publication in 1859 of Charles Darwin’s On the Origin of Species by Means of Natural Selection or the …

  5. Evolutionary psychology | Human Behavior & Adaptation | Britannica

    At the base of evolutionary psychology is Darwin’s theory of evolution by natural selection. Darwin’s theory made it clear how an animal’s physical features can be shaped by the …

  6. Evidence for evolution and Charles Darwin and Theodosius …

    evolution, Biological theory that animals and plants have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations.

  7. Human evolution | History, Stages, Timeline, Tree, Chart, & Facts ...

    Sep 30, 2025 · See the article evolution for a full explanation of evolutionary theory, including its main proponents both before and after Darwin, its arousal of both resistance and acceptance …

  8. evolution Facts | Britannica

    Sep 6, 2025 · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are …

  9. Evolution - Species, Genetics, Trees | Britannica

    Sep 8, 2025 · Evolution - Species, Genetics, Trees: Evolutionary trees are models that seek to reconstruct the evolutionary history of taxa—i.e., species or other groups of organisms, such …

  10. Sewall Wright | Population genetics, Evolutionary biology, Genetics ...

    Along with the British scientists J.B.S. Haldane and R.A. Fisher, Wright was one of the scientists who developed a mathematical basis for modern evolutionary theory, using statistical …