Gene Flow and Genetic Drift

Today, the Afrikaner population has an unusually high frequency of the gene that causes Huntington's Disease, because the Dutch colonists happened to carry that gene with unusually high frequency.

• Gene flow

• Natural Selection

• Bottleneck Effect

• Founder Effect.

• gene flow

• natural selection

• bottleneck effect

• founder effect

• gene flow

• natural selection

• bottleneck effect

• founder effect

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In order for the genetic drift to occur, what is the necessary parameter?

• The population must be large.

• The population must be small.

• The population must be under environmental stress.

• The population must be sterile.

Someone steps on some bugs and randomly removes their alleles from the population. This is an example of

• gene flow

• genetic drift

• speciation

• allele frequency

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The allele frequencies of the mouse population in the picture are changing over time. Which is true?

• The population is evolving.

• The population is not evolving.

• The population will go extinct.

• The population's genetic variation is increasing.

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The movement of alleles from one population to another is called

• genetic drift

• the bottleneck effect

• the founder effect

• gene flow

Which of the following best describes gene flow?

• The random change in allele frequencies in a population

• The movement of alleles between populations

• The selection of advantageous traits

• The loss of genetic diversity due to a small population size

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What is a key difference between gene flow and genetic drift?

• Gene flow increases genetic variation, while genetic drift decreases it

• Gene flow occurs in small populations, while genetic drift occurs in large populations

• Gene flow is a result of natural selection, while genetic drift is not

• Gene flow leads to speciation, while genetic drift does not

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In a population of butterflies, a storm blows a few individuals to a new island where they establish a new population. This is an example of:

• Gene flow

• Genetic drift

• Natural selection

• Founder effect