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- An adaptation is a feature produced by natural selection for its current function.
evolution.berkeley.edu › misconceptions-about-natural-selection-and-adaptation › defining-adaptation
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adaptation, in biology, the process by which a species becomes fitted to its environment; it is the result of natural selection ’s acting upon heritable variation over several generations.
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Aug 14, 2020 · spontaneous change. 18.2: Spontaneous and Nonspontaneous Processes is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts. Chemical and physical processes have a natural tendency to occur in one direction under certain conditions. A spontaneous process occurs without the need for a continual input of ...
This concept is central to ecology: the study of adaptation is the study of the evolutionary relationship between organisms and their environment. Adaptation is related to biological fitness, which governs the rate of evolution as measured by change in gene frequencies.
An adaptation is a feature produced by natural selection for its current function. Based on this definition we can make specific predictions (“If X is an adaptation for a particular function, then we’d predict that…”) and see if our predictions match our observations.
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- Key points
Review your understanding of adaptation and environmental change in this free article aligned to NGSS standards.
•Populations are often affected by changes in their environment. For example, changes in climate can affect how easy it is for organisms to find food or water.
•After an environmental change, traits that help organisms survive and reproduce in the new environment become more common. Similarly, traits that make organisms less likely to survive and reproduce become less common. This process occurs over multiple generations.
•As helpful traits become more common, the population adapts, or becomes better suited, to the new environment. The increase in helpful traits in a population over generations describes adaptation by natural selection.
•If environmental changes are too extreme, populations do not have time to adapt. As a result, the populations may go extinct.
Oct 19, 2023 · Vocabulary. In evolutionary theory, adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment. Although scientists discussed adaptation prior to the 1800s, it was not until then that Charles Darwin and Alfred Russel Wallace developed the theory of natural selection.
Apr 5, 2017 · Oxford Handbooks. Collection: Oxford Handbooks Online. The Layers and Movements of Adaptation. Definitions of adaptation tend to move between or concentrate on three perspectives.
