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What are some reasons rapid evolution may occur after long periods of equilibrium?
Wiki User
∙ 15y ago
Here are a couple of possiblilties (there are more): * The population can develop isolated subpopulations on its periphery. Evolution is much more rapid in small isolated populations. * Changes in the environment can lead to rapid evolution. Variation that was once neutral may now become beneficial and increase in frequency, while variation that may have been adaptive in the previous environment may now be deleterious and selected against.
Wiki User
∙ 15y ago
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Is it possible for evolution to occur by both natural selection and punctuated equilibrium?
Yes. Evolution via punctuated equilibrium still depends on natural selection. In punctuated equilibrium there are long periods in which most species are well-suited to their environments, and so there is is little selective pressure to change. These periods are punctuated by times of more rapid environmental change and greater stress, which results in greater selective pressure for populations to change.
What are three reasons for natural selection to occur?
1. different breeding 2. evolution 3.adaptation
The idea that new species occur suddenly in the fossil record followed by long periods of little change is called?
This is the idea called punctuated equilibria, by paleontologists Stephen Jay Gould and Niles Eldredge. It explains the patterns seen in the fossil record.
Can you compare and contrast gradualism and punctuated equilibrium?
punctuated equilibria accounts for the gaps in the fossil record. Species evolve quickly during relatively short periods. Tiny changes in a species gradually add up to major changes over very long periods of time. Gradualism proposes that evolution occurs slowly but steadily. These periods of rapid change are separated by long periods of little or no change.
What models of evolution view change as occurring over a long time frame and at a relatively constant pace?
The view of evolution occurring relatively constantly over a long time frame is called gradualism. This stands in contrast to the view of long periods of stasis punctuated by relatively rapid change, usually caused by environmental change. This is called punctuated equilibrium.A modern view of evolution recognizes that both processes are at work.
Is it possible for evolution to occur by both natural selection and punctuated equilibrium?
Yes. Evolution via punctuated equilibrium still depends on natural selection. In punctuated equilibrium there are long periods in which most species are well-suited to their environments, and so there is is little selective pressure to change. These periods are punctuated by times of more rapid environmental change and greater stress, which results in greater selective pressure for populations to change.
Did evolution occur in the permian period?
Yes. Evolution ocurred in all geologic periods.
What is the model in of evolution in which periods of rapid change occur is called?
Selective breeding is used for more rapid evolution or artificial breeding.
What is a statement describes the punctuated equilibrium theory?
The punctuated equilibrium theory suggests that species tend to evolve in rapid bursts of change followed by long periods of stability. This theory proposes that evolution does not always occur gradually and uniformly, but can involve abrupt shifts in traits due to significant environmental changes or genetic factors.
According to the theory of punctuated equilibrium when does stasis occur?
The pattern described by the theory of punctuated equilibrium is that bursts of evolutionary activity are followed by long periods of stability.
What is the proof for Darwin's theory of undirected mutation and incremental change over other theories of evolution - punctuated equilibrium?
Punctuated equilibrium is not ' a theory of evolution ' but well ensconced within modern evolutionary theory. Scientists look for evidence, not proof. The evidence suggests that punctuated equilibrium and incremental change are not mutually exclusive and both can occur in nature.
What are three reasons for natural selection to occur?
1. different breeding 2. evolution 3.adaptation
The idea that new species occur suddenly in the fossil record followed by long periods of little change is called?
This is the idea called punctuated equilibria, by paleontologists Stephen Jay Gould and Niles Eldredge. It explains the patterns seen in the fossil record.
When does an equilibrium occur?
Equilibrium occurs when the first derivative is zero.
What if you skip a month and you get it the next?
This does occur sometimes, with periods. The skipped month is not always fully understood, but there can be a number of reasons behind it (most of them nonpathologic).
Can you compare and contrast gradualism and punctuated equilibrium?
punctuated equilibria accounts for the gaps in the fossil record. Species evolve quickly during relatively short periods. Tiny changes in a species gradually add up to major changes over very long periods of time. Gradualism proposes that evolution occurs slowly but steadily. These periods of rapid change are separated by long periods of little or no change.
What models of evolution view change as occurring over a long time frame and at a relatively constant pace?
The view of evolution occurring relatively constantly over a long time frame is called gradualism. This stands in contrast to the view of long periods of stasis punctuated by relatively rapid change, usually caused by environmental change. This is called punctuated equilibrium.A modern view of evolution recognizes that both processes are at work.
