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What condition would a mutation have the most impact on allele frequency A.The population is large. B.Individuals are moving in and out of the population. C.There is gene flow. D.There is n?
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How mutation can change the gene pool?
If a mutation is present in a gamete, then the mutation will enter the population's gene pool. Once it is in the gene pool, natural selection and genetic drift will influence the frequency that the mutation appears in the population.
What are three mechanisms that cause allele frequency differences in a population?
Mutation, migration, and genetic drift
What factor determines whether the frequency of the new allele will increase?
Which factor might determine whether the frequency of the new allele will increase in a population where a mutation occurs?
What do mutations do to alleles?
Generally, gene frequency will not change significantly unless the mutation is successful and advantageous enough that it is heavily selected in the population. Since most mutations result in failure of the organism to thrive (death, reproductive failure, etc.) they have little or no effect on a population's gene frequencies. Even if the mutation has no apparent detrimental effects it will, itself remain in the population at a low frequency unless it enhances the organism's ability to reproduce within the population.
How does genetic drift affect the population over time?
The effect a mutation has on a population depends on two factors: First, every new mutation has to overcome the effects of chance on its survival. New mutations,when they exist in only one or two individuals, are often lost from the population due to genetic drift, or chance. For example, the mutation may never make it into a gamete (egg or sperm) and be lost. Or the gamete carrying the mutation may not be involved in a fertilization. Or the individual carrying the mutation may not find a mate, or may be killed when young. It is estimated that 1 out of three new mutations, regardless of the selective advantage, may be lost this way. Secondly, the selective value of the mutation (given it has survived being lost early due to drift) can determine its affect on the population. If it is deleterious, selection will act to reduce its frequency or even eventually remove it. If the mutation is neutral, its frequency will drift up and down due to chance, eventually either being lost or fixed (reaching a frequency of 100%). If it has a selective advantage over other alleles, it may eventually become fixed as well--how long depends on the size of the population and the strength of the advantage.
Under is condition would a mutation have most impact on allele frequency?
There is no gene flow.
When does a mutation have the mutation impact on allele frequency?
When the population is small or When there is no gene flow Small population, germ line mutation, beneficial mutation that gets into many progeny and a good deal of luck.
What causes a frequency in a population to change after each generation?
Gene mutation causes the phenotype frequency in a population to change after each generation.
How mutation can change the gene pool?
If a mutation is present in a gamete, then the mutation will enter the population's gene pool. Once it is in the gene pool, natural selection and genetic drift will influence the frequency that the mutation appears in the population.
When does mutation have a most impact on Allele frequency?
When the population is small or When there is no gene flow Small population, germ line mutation, beneficial mutation that gets into many progeny and a good deal of luck.
What are three mechanisms that cause allele frequency differences in a population?
Mutation, migration, and genetic drift
When does a mutation have the most impact on allele frequency?
There is no gene flow - APEX
What factor determines whether the frequency of the new allele will increase?
Which factor might determine whether the frequency of the new allele will increase in a population where a mutation occurs?
What mutation has the greatest effect?
The mutation that has the greatest effect is one that is not only beneficial but that is heavily selected for by the environment. Ideally dominant as it will effect the population more rapidly than a recessive trait. Only traits that are selected for or against in a population change the frequency of the occurance of the alleles in the population.
What event will increase the frequency of a mutation in a population over time?
Mutation is the alteration of the nucleotide sequence of an organism, virus, or gene. A mutation can be caused by many factors like radiation and chemical exposure, inadequate nutrition, drastic changes in the environment, or an error in DNA replication. The frequency of occurrence of a particular mutation in the gene pool can be affected by drift, natural selection, sexual selection.
How can mutation rate affect the evolution of a population?
1. The mutation rates affect the evolution of the population by two factors. Firstly, every new mutation overcomes the effects of survival. When new mutations exist in one or two individuals, they are often lost from the population due to genetic drift, or change. For example, the mutation may never make it to a gamete and may get lost. Secondly, the selective value of the mutation can determine its affect of the population. If it's harmful then the selection would act to reduce its frequency and eventually remove it.
What do mutations do to alleles?
Generally, gene frequency will not change significantly unless the mutation is successful and advantageous enough that it is heavily selected in the population. Since most mutations result in failure of the organism to thrive (death, reproductive failure, etc.) they have little or no effect on a population's gene frequencies. Even if the mutation has no apparent detrimental effects it will, itself remain in the population at a low frequency unless it enhances the organism's ability to reproduce within the population.
