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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 Definition & Meaning - Merriam-Webster

    The meaning of EVOLUTION is descent with modification from preexisting species : cumulative inherited change in a population of organisms through time leading to the appearance of new …

  7. 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...

  8. What is evolution? | Biological Principles - gatech.edu

    In more technical terms, biological evolution is defined as change in the gene pool of a population, measurable as changes in allele frequencies in a population over time. In the earlier reading, …

  9. Explore Evolution

    Explore Evolution features the work of scientists who are making leading discoveries about the evolution of life. From rapidly evolving HIV to whales that walked, the public is invited to …

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

    Jun 6, 2025 · 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, …