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  1. Dictionary
    natural selection
    /ˌnatʃ(ə)rəl sɪˈlɛkʃn/

    noun

    • 1. the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin, and it is now regarded as be the main process that brings about evolution.

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    • Differential reproduction of alternative hereditary variants

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      schoolbag.info

      • Natural selection, then, can be defined as the differential reproduction of alternative hereditary variants, determined by the fact that some variants increase the likelihood that the organisms having them will survive and reproduce more successfully than will organisms carrying alternative variants.
      www.britannica.com/science/evolution-scientific-theory/The-science-of-evolution

      Evolution - Natural Selection, Adaptation, Genetics | Britannica

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

    3 days ago · Natural selection, then, can be defined as the differential reproduction of alternative hereditary variants, determined by the fact that some variants increase the likelihood that the organisms having them will survive and reproduce more successfully than will organisms carrying alternative variants.

  5. www.britannica.com › Types-of-selectionEvolution - Natural, Sexual, Artificial | Britannica

    5 days ago · Evolution - Natural, Sexual, Artificial: Natural selection can be studied by analyzing its effects on changing gene frequencies, but it can also be explored by examining its effects on the observable characteristics—or phenotypes—of individuals in a population.

    • Francisco Jose Ayala

  6. www.britannica.com › science › evolution-scientificEvolution | Definition, History, Types, & Examples | Britannica

    3 days ago · Natural selection occurs because individuals having more-useful traits, such as more-acute vision or swifter legs, survive better and produce more progeny than individuals with less-favourable traits. Genetics, a science born in the 20th century, reveals in detail how natural selection works and led to the development of the modern theory of ...

    • Francisco Jose Ayala

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  8. www.nature.com › subjects › evolutionEvolution - Latest research and news - Nature

    4 days ago · Evolutionary biology is the study of this process, which can occur through mechanisms including natural selection, sexual selection and genetic drift.

  9. www.youtube.com › watchDarwin’s Revolution: The Groundbreaking Theory of Natural ...

    5 days ago · In 1859, Charles Darwin introduced the theory of natural selection, fundamentally transforming our understanding of evolution and the diversity of life on Ea...

    • 48 sec
    • 13
    • Scientific Discoveries

  10. www.nature.com › articles › d41586/024/03073-2What is a cell type, really? The quest to categorize life’s ...

    5 days ago · In living tissue, cells are constantly exposed to signals that could influence them, such as metabolites, hormones or pathogens. “You only really know what type a cell is once you also know how ...

  11. www.genome.gov › genetics-glossary › EvolutionEvolution - National Human Genome Research Institute

    3 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 mutations that produce genomic variation, giving rise to individuals whose biological functions or physical traits are altered.