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punctuated equilibrium
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∙ 12y ago
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What are some possible explanations for rapid evolutionary changes?
Adaptive radiation is one good explanation for rapid evolutionary change. When a dominant taxa goes extinct, such as the dinosaurs, the surviving species/taxa, such as the mammals have many niches that they can now fill, so any variation in individuals against immediate environments can lead to survival and reproductive advantages that translate into rapid allelic changes in populations; rapid evolutionary change.
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 does gradualism and punctuated equilibrium have in common?
That they are both theories of evolutionary change, but the tempo of the change is different enough that we have the two theories. Rapid evolutionary change punctuated with long periods of stasis describes the former while gradual and incremental change over long periods is the description of the later. Natural selection seems to be more important in gradualism than punctuation, but this is a murky area that is argued about often.
What is the word for a rapid change in body temperature?
Hyperthermia and hypothermia are what the rapid change in body temperature is called. Someone who is experiencing hyperthermia has a temperature that remains above normal. Someone who is experiencing hypothermia has a temperature that remains below normal.
Under what circumstances might rapid evolution occur?
Rapid environmental change results in rapid evolutionary change (as long as it doesn't occur too fast, in which case the organsisms will simply die out). Also the disappearance of the dominant organisms (eg dinosaurs) leaves an empty space in the ecosystem and the remaining organisms will evolve quickly to fill it. Finally, the release of an animal into a new environment or a domesticated animal into a natural environment results in rapid evolution. Two examples are cane toads in Northern Australia which have evolved longer legs so they can travel further and feral cats in Australia reverting back to their natural state (insanely big and evil-looking) in just 4 generations.
What change to the concept of macroevolution did Neo-Darwinism make?
One of the last major concepts to be introduced to the modern evolutionary synthesis was the idea of punctuated equilibrium, which held that rates of divergence may be highly variable - spurts of rapid divergence followed by long periods of very gradual and superficial change.
What are some possible explanations for rapid evolutionary changes?
Adaptive radiation is one good explanation for rapid evolutionary change. When a dominant taxa goes extinct, such as the dinosaurs, the surviving species/taxa, such as the mammals have many niches that they can now fill, so any variation in individuals against immediate environments can lead to survival and reproductive advantages that translate into rapid allelic changes in populations; rapid evolutionary change.
What is a Zone of rapid change in ocean temperature is called the?
A rapid change in temperature with depth in the ocean is called thermocline. A rapid change in density with depth in the ocean is called the pynocline.Thermocline
Which reproductive would be associated with a speciesthat is most likelt to undergo rapid evolutionary change?
Sexual reproduction with a short reproductive cycle
What is the rapid change in the weather called?
th a
A pattern of rapid evolutionary changes followed by long periods of no change is described as?
Punctuated Evolution or equilibrium
What is a rapid change in ocean density with change in depth called?
Pycnocline
Which statement best supports the inference that the ancestors of modern day elephants had no trunks or tusks and were the size of pigs?
Evolutionary change is always rapid and contunuous
How do you know when your platy is in labor?
They tend to move in rapid spurts and then stop with their fins quivering. This can continue for some time.
A zone rapid temperature change is called what?
Thernocline
A rapid change in density with depth in the ocean is called the?
pycnocline
Which reproductive would be associated with a species that is most likely to undergo rapid evolutionary change?
The answer is: sexual reproduction with a short reproductive cycle. This is the answer because evolution is the change in living things over a period of time.
