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  1. en.wikipedia.org › wiki › EvolutionEvolution - Wikipedia

    Evolution is the change in the heritable characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations.

  2. www.britannica.com › science › evolution-scientific-theoryEvolution | Definition, History, Types, & Examples | Britannica

    23 de abr. de 2024 · 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 modifications in successive generations. The theory of evolution is one of the fundamental keystones of modern biological theory.

  3. evolution.berkeley.edu › evolution-101 › an-introduction-to-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 processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise

  4. www.britannica.com › science › evolution-scientific-theoryEvolution - Natural Selection, Adaptation, Genetics | Britannica

    Hence, in genetic terms evolution consists of changes in the organism’s hereditary makeup. Evolution can be seen as a two-step process. First, hereditary variation takes place; second, selection is made of those genetic variants that will be passed on most effectively to the following generations.

  5. education.nationalgeographic.org › resource › theory-of-evolutionTheory of Evolution - Education | National Geographic Society

    19 de oct. de 2023 · Theory of Evolution. 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 nineteenth century.

  6. www.nature.com › scitable › knowledgeEvolution | Learn Science at Scitable - Nature

    Evolution is a process that results in changes in the genetic content of a population over time. There are two general classes of evolutionary change: microevolution and macroevolution.

  7. evolution.berkeley.edu › bienvenido-a-la-evolucion-101 › introduccion-a-la-evolucionIntroducción a la evolución - 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 processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise

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