Evolution

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  • transformation of an organism such that descendants differ from their predecessors
    Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
  • theory that all living things have undergone, and do undergo, gradual changes through successive generations; that all living organisms are constantly changing (evolving)
    Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
  • The long-term process through which a population of organisms accumulats genetic changes that enable its members to successfully adapt to environmental conditions and to better exploit food resources.
  • Evolution is the process by which organisms change over time. Mutations produce genetic variation in populations, and the environment interacts with this variation to select those individuals best adapted to their surroundings. The best-adapted individuals leave behind more offspring than less well-adapted individuals. Given enough time, one species may evolve into many others.


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