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Punctuated equilibrium


punctuated equilibrium
the relatively sudden appearance of species in the fossil record reflects a relatively rapid process of speciation; ...
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Punctuated Equilibrium's History
Punctuated equilibrium originated as an extension of Ernst Mayr's concept of genetic revolutions by peripatric and allopatric speciation.
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Punctuated equilibrium, or punctuated equilibria, is a theory of evolution which states that changes such as speciation can occur relatively quickly, with long periods of little change—equilibria—in between.
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punctuated equilibrium -- A model of evolution in which change occurs in relatively rapid bursts, followed by longer periods of stasis.
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Punctuated Equilibrium
According to another model based on the fossil record, speciation occurs rapidly over a short time, followed by a long period of little or no change. "Short" means thousands or hundreds of thousands of years.
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punctuated equilibrium
A theory of evolution advocating spurts of relatively rapid change followed by long periods of stasis.
Punnett square ...
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punctuated equilibrium. A model of evolution in which morphological evolutionary change is discontinuous, being associated primarily with discrete, geologically instantaneous events of speciation leading to phylogenetic branching; ...
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Punctuated Equilibrium
The theory of punctuated equilibrium is an inference about the process of macroevolution from the pattern of species documented in the fossil record.
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Debates have continued within the field. One of the most prominent outstanding debates is over the theory of punctuated equilibrium, a theory propounded by Stephen Jay Gould to explain the paucity of transitional forms between phyla.
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Punctuated equilibrium: the belief that evolution proceeds by spurts of change interspersed with long periods of stasis (genetic stability) where selection favors no change.
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