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In evolutionary biology, punctuated equilibrium (also called punctuated equilibria) is a theory that proposes that once a species appears in the fossil record, the population will become stable, showing little evolutionary change for most of its geological history. [1]
15 Ιαν 2021 · Learn about the theory of punctuated equilibrium, which states that evolution occurs through short bursts of intense speciation, followed by long periods of stasis. Find out how this theory explains the fossil record, the role of reproductive isolation, and the contrast with gradualism.
“Punctuated equilibrium is the idea that evolution occurs in spurts instead of following the slow, but steady path that Darwin suggested. Long periods of stasis with little activity in terms of extinctions or emergence of new species are interrupted by intermittent bursts of activity.” 5
Learn about the theory of punctuated equilibrium, which explains the discontinuous tempo of evolutionary change at the species level. Find chapters and articles on this topic from various disciplines, such as ecology, evolution, and food safety.
Punctuated equilibrium is a theory used to justify coding, but time and variation won’t go away. It is a point in Darwin’s favor that the Origin of Species and natural selection both featured time and variation.
Learn how Stephen Jay Gould and Niles Eldredge proposed that species are generally stable, changing little for millions of years, and then undergo a rapid burst of change that results in a new species. Explore the fossil record of bryozoans and other organisms that support or challenge this hypothesis.
5 Ιουν 2008 · The theory of punctuated equilibrium states that evolutionary change is characterised by short periods of rapid evolution followed by longer periods of stasis in which no change occurs. Despite years of work seeking evidence for punctuational change in the fossil record, the theory remains contentious.
