punctuated equilibrium Meaning and Definition
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punctuated equilibrium
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English definition for punctuated equilibrium
1. n. a theory of evolution holding that evolutionary change in the fossil record came in fits and starts rather than in a steady process of slow change
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Punctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that once species appear in the fossil record they will become stable, showing little evolutionary change for most of their geological history.
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