natural selection definition

  • noun:
    • the method in general by which, in accordance with Darwin's theory of advancement, only the organisms most readily useful adjusted to their environment tend to endure and transfer their hereditary faculties in increasing numbers to succeeding generations while those less adapted are eliminated.
    • A process by which heritable attributes conferring success and reproductive benefit to people, or related people, are offered to succeeding years and start to become more regular in a population, whereas other less favorable faculties tend to be eradicated.
    • an activity by which individual organisms or phenotypes that have favourable characteristics may endure and reproduce: the differential survival and reproduction of phenotypes.
    • See under Natural.
    • an all natural procedure leading to the evolution of organisms well adjusted to the environment
  • adjective:
    • the operation of normal legislation analogous, within their procedure and results, to designed selection in breeding flowers and creatures, and resulting in the survival associated with fittest; the removal in the long run of species unable to compete in particular surroundings along with other species more adapted to success; -- the fundamental apparatus of development. The concept of normal selection is natural with respect to the mechanism through which inheritable modifications occur in organisms (most frequently considered because of mutation of genetics and reorganization of genomes), but proposes that those forms which may have become therefore customized as to be better adapted to the current environment have actually tended to endure and then leave similarly adapted descendants, while those less completely adjusted have actually tended to perish away through insufficient fitness for the environment, thus leading to the success of fittest. See Darwinism.

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    • the method in general by which, in accordance…
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