a short term adaptation which is not inherited

 "ADAPTATION" can be a confusing term because of the many ways it is used. For example, "adaptation" can refer to both processes and products:


    (1) a "developmental" change such as that of a sense organ that make it less responsive to repetitive but irrelevant stimuli, or

    (2) an evolutionary change such as those caused by selection pressures on some attribute of a trait that helps the organism cope with a changing environment over the generations, or

    (3) a biological TRAIT that exists because it confers or is linked to a trait that now (or in the past) has conferred a biological advantage enhancing an organism's FITNESS.


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An alteration or adjustment in structure or habits, often hereditary, by which a species or individual improves its condition in relationship to its environment.

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