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In artificial selection humans provide the selective pressure for species to change and shape the evolution of various breeds What provides the selective pressure in natural selection?
Wiki User
∙ 14y ago
The need for a change itself. For example, the need to migrate in order to keep up with food sources would bring an organism into another territory that their bodies might not be adjusted to. Rather than dying off, the "fittest" organism of that breed might mate with another "fit" organism, and after - guessing - 20 generations or so, genetic changes will have made that territory the most suitable environment for that organism.
Wiki User
∙ 14y ago
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When is genetic drift a major factor in evolution?
When there is low gene flow When there is no selective pressure When there is a bottleneck
What is the definition of selective pressure?
Selective pressure is any phenomena which alters the behavior and fitness of living organisms within a given environment. It is the driving force of evolution and natural selection, and it can be divided into two types of pressure: biotic or abiotic
How can humanavtivities affect the evolution of organisms?
Look around you at the products of artificial selection. From alpaca tom wheat man has ordered the evolution of these organisms to suit his needs. Then there is habitat destruction where the migration of humans all over the earth has put a great selection pressure on organisms in adapting to human presence. Not all do and some are extinct from human migrations into their ranges and that is part of evolution to. Then there is climate change which will put great selection pressure on all the organisms of the earth. Some populations will have the variations needed to adapt to a warming earth and these populations will have individuals selected and thus evolve into new forms in the coming years.
How the environment preadators and mutations affect natural selection?
Predators create a selective pressure on a population. For example, birds that eat insects put a selective pressure on the insects to have better camouflage. Lions that run fast put a selective pressure on their prey to be able to run even faster.Its the same as a selective pressure created by the environment like adaptation to living in a cold environment. Those that can survive the cold the best live. The insects with the best camouflage survive as do the animals that can run the fastest.
What are some examples of selective pressure?
drought
How was the domestication of animals and plants was appiled to the theory of natural selstion?
These plants and animals were subjected to artificial selection so that the traits humans wanted in the organisms were selected for and the organisms not having these traits were culled. This, with some modification, is a good analogue for natural selection and artificial selection shows how organisms can be shaped over time with the proper selective pressures. The selective pressure of humans in artificial selection and the selective pressure of the environment in natural selection.
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.
When is genetic drift a major factor to evolution?
When there is low gene flow (apex 10.1.2)
What might bring about the evolution of the new species?
The separation of a population, selective pressure, and/or time.
When is genetic drift a factor in evolution?
When there is low gene flow When there is no selective pressure When there is a bottleneck
When is genetic drift a major factor in evolution?
When there is low gene flow When there is no selective pressure When there is a bottleneck
What is selection pressure as it relates to organisims?
This is the same as evolution of caveman to modern man.
Are organisms able to consciously direct the course of their own evolution?
No. Evolution is a consequence of selective pressure(s) from the environment acting on organisms. Virtually all living beings are not conscious of this process.The only species that *could* consciously direct its own evolution is Homo sapiens (humans), but currently it doesn't.Artificial selection can and has consciously directed evolution, but it always was a species acting over other different species, not on their own evolution.
What did Darwin assert in his book On The Origin of Species as the mechanism of evolution?
Due to genes and mutations, organisms show variation within a species. Changes in the environment can put a selective pressure on the species - certain mutations may be more beneficial, therefore more individuals with that mutation will exist, as they survive and breed. This process is called Natural Selection.
What is the definition of selective pressure?
Selective pressure is any phenomena which alters the behavior and fitness of living organisms within a given environment. It is the driving force of evolution and natural selection, and it can be divided into two types of pressure: biotic or abiotic
How can humanavtivities affect the evolution of organisms?
Look around you at the products of artificial selection. From alpaca tom wheat man has ordered the evolution of these organisms to suit his needs. Then there is habitat destruction where the migration of humans all over the earth has put a great selection pressure on organisms in adapting to human presence. Not all do and some are extinct from human migrations into their ranges and that is part of evolution to. Then there is climate change which will put great selection pressure on all the organisms of the earth. Some populations will have the variations needed to adapt to a warming earth and these populations will have individuals selected and thus evolve into new forms in the coming years.
What is a natural selection results?
Adaptions that lead to greater survivability and reproductive success in the immediate environment of the individual organisms under selection pressure.
