acquired characteristic

noun

a characteristic of an organism that results from increased use or disuse of an organ or the effects of the environment and cannot be inherited See also Lamarckism

A nonhereditary change of function or structure in a plant or animal made in response to the environment. Acquired characteristics include bodily changes brought about by disease or by repeated use or disuse of a body part (as in the building or atrophy of muscle tissue). The heritability of acquired characteristics was advocated by certain biological theorists like Jean-Baptiste Lamarck and rejected by Charles Darwin in his formulation of the theory of evolution.

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Example Sentences

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Weismann had proposed a radical alternative: perhaps hereditary information was contained exclusively in sperm and egg cells, with no direct mechanism for an acquired characteristic to be transmitted into sperm or eggs.

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Mentioning the limping family dog, Bunch, in an apt example of an acquired characteristic that cannot be inherited, he is reminded of an unfinished poem his mother wrote after Bunch died, which he prints.

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But wealth inheritance is obviously Lamarckian, in that it’s the inheritance of an acquired characteristic.

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They acquired characteristic modes of speaking, of thinking.

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And that—the inheritance of an acquired characteristic—is quite startling.

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acquired character acquired drive

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