Two types of factors can govern microevolution. On one hand, mutation is a constant source of new genetic variation. On the other hand, mechanisms that alter existing genetic variation, such as natural selection and genetic drift, can act to alter existing genetic variation. How do those two types of factors compare in terms of the magnitude of their effect on allele frequencies in a population?Multiple choice question.Mutations have a negligible effect on allelic frequencies, while mechanisms such as natural selection and drift can have a dramatic effect.Mutations can have a dramatic effect on allelic frequencies, even when mechanisms such as natural selection and drift are not operating.Both mutations and mechanisms, such as selection and drift, can dramatically and quickly alter allelic frequencies in a population.
Question
Two types of factors can govern microevolution. On one hand, mutation is a constant source of new genetic variation. On the other hand, mechanisms that alter existing genetic variation, such as natural selection and genetic drift, can act to alter existing genetic variation. How do those two types of factors compare in terms of the magnitude of their effect on allele frequencies in a population?Multiple choice question.Mutations have a negligible effect on allelic frequencies, while mechanisms such as natural selection and drift can have a dramatic effect.Mutations can have a dramatic effect on allelic frequencies, even when mechanisms such as natural selection and drift are not operating.Both mutations and mechanisms, such as selection and drift, can dramatically and quickly alter allelic frequencies in a population.
Solution
Mutations have a negligible effect on allelic frequencies, while mechanisms such as natural selection and drift can have a dramatic effect.
Similar Questions
Natural selection, mutation, genetic drift, nonrandom mating, and gene flow are all mechanisms of ______ and can change allele frequencies in populations.Multiple choice question.geneticsfounder effectsbottleneck effectsevolution
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f genetic drift is followed over a great many generations, what is its expected effect on allele frequencies?Multiple choice question.The ultimate effect of genetic drift over many generations is always loss of alleles.Alleles are either lost (frequency of 0%) or fixed (frequency of 100%) in the populations.Over many generations, genetic drift tends to make the frequencies of all alleles of a particular gene the same.
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