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One similarity between natural selection and genetic drift is that both events change what?
Both change the availability of certain alleles in the gene pool.
Natural selection is a natural process resulting in the evolution of organisms best adapted to the environment. ie predators eat the slower prey, so faster genes survive to spread to the next generation.
Random fluctuations in the frequency of the appearance of a gene in a small isolated population, presumably owing to chance rather than natural selection. ie 50 people move from America to a small island in the Caribbean, and stay isolated there for many centuries. If maybe 20 of those original 50 people carried a gene for say, early onset male baldness, that would not mean that 20 out of every 50 people in US have that gene, that just means that this happened by chance. If they inbreed for centuries, eventually most or all of them will carry this gene. This is why it is important that our gene pool does not become stagnant.
Source: Way too much Biology for nursing!
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What is the main similarity between the process if artificial selection and natural selection?
The similarity between artificial and natural selection is that they are both weeding out unfavorable traits for favorable traits to be well equipped for survival.
Is Natural selection a source of genetic variation in a population?
No, natural selection works on that genetic variation presented to it.
What is the main difference between natural selection and genetic drift?
The main difference between natural selection and genetic drift is that natural selection involves the differential survival and reproduction of individuals based on their traits, leading to an increase in advantageous traits in a population over time. Genetic drift, on the other hand, is a random process that can lead to changes in allele frequencies in a population due to chance events, rather than selection pressure.
Which of these is necessary for natural selection to occur genetic engeneering genetic variation asexual reproduction or enviormental stability?
Genetic variation is necessary for natural selection to occur. This variation provides the raw material for differential survival and reproduction, which drives the process of natural selection. Without genetic variation, there would be no differences for natural selection to act upon.
What is the similarity between natural selection and genetic drift?
No. Genetic mutations lead to changes in the gene. This results in a (possible) new allele. Genetic drift is the change in frequency of an allele in the population due to chance. The smaller the population the bigger the chance on genetic drift (like it is more likely to coin flip 10 heads in a row then 1000 heads) while on the other hand the bigger the population the bigger the chance new alleles will be created by mutations.
What is the difference between purifying selection and positive selection in the process of natural selection?
Purifying selection removes harmful genetic variations, while positive selection promotes beneficial genetic variations in natural selection.
What is the main similarity between the process if artificial selection and natural selection?
The similarity between artificial and natural selection is that they are both weeding out unfavorable traits for favorable traits to be well equipped for survival.
How does genetic variation support Natural Selection?
Genetic variation in itself does not 'support' natural selection: it is what natural selection acts upon.
Is Natural selection a source of genetic variation in a population?
No, natural selection works on that genetic variation presented to it.
How is genetic diversity important to the concept of natural selection?
Without genetic diversity, natural selection cannot occur
What are genetic mutation and natural selection?
Together, genetic mutation and natural selection determine in what 'direction' evolution proceeds.
What is the main difference between natural selection and genetic drift?
The main difference between natural selection and genetic drift is that natural selection involves the differential survival and reproduction of individuals based on their traits, leading to an increase in advantageous traits in a population over time. Genetic drift, on the other hand, is a random process that can lead to changes in allele frequencies in a population due to chance events, rather than selection pressure.
Which of these is necessary for natural selection to occur genetic engeneering genetic variation asexual reproduction or enviormental stability?
Genetic variation is necessary for natural selection to occur. This variation provides the raw material for differential survival and reproduction, which drives the process of natural selection. Without genetic variation, there would be no differences for natural selection to act upon.
Is it possible for a population to undergo natural selection?
No, there is no genetic variation upon which natural selection can operate.
Why is genetic variation important for natural selection to drive evolution?
Genetic variation is important for natural selection to drive evolution because it provides the raw material for natural selection to act upon. Without genetic variation, there would be no diversity in traits for natural selection to favor or eliminate, and evolution would not be possible.
What is the similarity between natural selection and genetic drift?
No. Genetic mutations lead to changes in the gene. This results in a (possible) new allele. Genetic drift is the change in frequency of an allele in the population due to chance. The smaller the population the bigger the chance on genetic drift (like it is more likely to coin flip 10 heads in a row then 1000 heads) while on the other hand the bigger the population the bigger the chance new alleles will be created by mutations.
Which type of selection tends to increase genetic variation?
Natural Selection.
