natural selection

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Related to Evolutive pressure: Darwinian selection

natural selection

n.
The process in nature by which, according to Darwin's theory of evolution, organisms that are better adapted to their environment tend to survive longer and transmit more of their genetic characteristics to succeeding generations than do those that are less well adapted.

natural selection

n
(Biology) a process resulting in the survival of those individuals from a population of animals or plants that are best adapted to the prevailing environmental conditions. The survivors tend to produce more offspring than those less well adapted, so that the characteristics of the population change over time, thus accounting for the process of evolution

nat′ural selec′tion


n.
the process in nature by which forms of life having traits that better enable them to adapt to specific environmental pressures, as changes in climate or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus perpetuating those traits in succeeding generations.
[1855–1860]

natural selection

The principle that only organisms best suited to their environment survive long enough to pass on their genetic characteristics to their offspring. According to this principle, the proportion of the species having these characteristics increases with each generation. Natural selection results from random variation of genetic traits in a species and forms the basis of the process of evolution. See Notes at adaptation, evolution.

natural selection

The process that favors the survival and reproduction of organisms that are best adapted to their environment.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.natural selection - a natural process resulting in the evolution of organisms best adapted to the environment
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
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