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  1. Evolution - Wikipedia

    Evolution is the change in the heritable characteristics of biological populations over successive generations. [1] [2] It occurs when evolutionary processes such as natural selection and …

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

    Jun 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 …

  3. An introduction to evolution - Understanding Evolution

    Evolution 101. An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the …

  4. Theory of Evolution - National Geographic Society

    Oct 19, 2023 · The theory of evolution is a shortened form of the term “theory of evolution by natural selection,” which was proposed by Charles Darwin and Alfred Russel Wallace in the …

  5. Evolution – Definition, Types, Advantages, Examples

    Nov 13, 2024 · Evolution is the process by which species change over time through the gradual accumulation of genetic variations, driven by mechanisms like natural selection, genetic drift, …

  6. evolution | Learn Science at Scitable - Nature

    Evolution is a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing...

  7. Evolution - National Human Genome Research Institute

    4 days ago · Evolution, as related to genomics, refers to the process by which living organisms change over time through changes in the genome. Such evolutionary changes result from …

  8. What is evolution? | Definition of evolution - YourGenome

    In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all …

  9. How Does Evolution Work? - American Museum of Natural History

    Over time, countless changes in the shape, size and function of various parts of the body gave rise to new forms of life—from ants to amoebas, hummingbirds to humans. These evolutionary …

  10. An Introduction to Evolution - ThoughtCo

    Evolution is change over time. Under this broad definition, evolution can refer to a variety of changes that occur over time—the uplifting of mountains, the wandering of riverbeds, or the …

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