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  • the process whereby members of a species who have more surviving offspring than others pass their traits on to the next generation, whereas the less favored do not do so to the same degree.
  • a process of differential fertility in which some genotypes, under a specific set of conditions, are more successful in producing progeny than others
    Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
  • The differential survival and reproduction of organisms with genetic characteristics that enable them to better utilize environmental resources.

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