| 释义 |
punctuated equilibrium
punc·tu·at·ed equilibrium (pŭngk′cho͞o-ā′tĭd)n.1. The theory that the evolution of life on earth typically follows a pattern in which long periods of little morphological change are punctuated by relatively short periods of significant change, when speciation occurs.2. Evolutionary development of this kind.punc′tuated equilib′rium
n. a theory that the evolution of species proceeds with long periods of relative stability interspersed with rapid change. Compare gradualism (def. 2). [1972] punc·tu·at·ed equilibrium (pŭngk′cho͞o-ā′tĭd) The theory that new species evolve suddenly over relatively short periods of time, followed by longer periods in which little genetic change occurs. Punctuated equilibrium is a revision of Darwin's theory that evolution takes place at a slow, constant rate over millions of years. Compare gradualism. See Note at evolution.Thesaurus| Noun | 1. | punctuated equilibrium - 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 changetheory of punctuated equilibriumevolutionism, theory of evolution, theory of organic evolution - (biology) a scientific theory of the origin of species of plants and animals |
punctuated equilibrium
punctuated equilibrium the theory that evolutionary change has occurred during short periods of rapid change punctuated by periods of stability Such a process would be characterized by the absence of an infinite range of intermediate forms, and supporters of the theory point to the vertebrate fossil record as evidence.MedicalSeep/epunctuated equilibrium
Synonyms for punctuated equilibriumnoun 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 changeSynonyms- theory of punctuated equilibrium
Related Words- evolutionism
- theory of evolution
- theory of organic evolution
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