How does drift affect the frequencies of alleles within a population? a. Random

Question

How does drift affect the frequencies of alleles within a population?

a. Random mating within a population mixes alleles at a particular locus into many different combinations, and when this happens, frequencies of alleles change across generations.

b. In large populations, the likelihood that all individuals will be able to mate is low, so the likelihood that all alleles being represented in the next genera- tion is also low.

c. Some individuals are more likely to breed with other individuals, and so only their alleles will appear in the next generation.

d. Drift results in a variety of genotypes over many generations because the heterozygotes mate randomly leading to some homozygotes of each allele and some heterozygotes, changing the frequency of the alleles.

e. Random mating does not equal uniform mating, and as a result of this im- perfect sampling, some alleles do not get represented in the next generation.

a. Random mating within a population mixes alleles at a particular locus into many different combinations, and when this happens, frequencies of alleles change across generations.

b. In large populations, the likelihood that all individuals will be able to mate is low, so the likelihood that all alleles being represented in the next genera- tion is also low.

c. Some individuals are more likely to breed with other individuals, and so only their alleles will appear in the next generation.

d. Drift results in a variety of genotypes over many generations because the heterozygotes mate randomly leading to some homozygotes of each allele and some heterozygotes, changing the frequency of the alleles.

e. Random mating does not equal uniform mating, and as a result of this im- perfect sampling, some alleles do not get represented in the next generation.

Explanation / Answer

Question: How does drift affect the frequencies of alleles within a population?

Answer: [E] Random mating does not equal uniform mating, and as a result of this im-perfect sampling, some alleles do not get represented in the next generation.

Explanation: Mating patterns are very important in the genetic variation of population and when a particular population interbreeds non-random mating can happen because one organism chooses to mate with another and the random forces lead to genetic drift and there can be random fluctuations in the number of alleles in that particular population.

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