Exam 17: Processes of Evolution

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In the Hardy-Weinberg equation, the term q2 refers to the frequency of ____.

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B

A male develops a trait that makes it a more attractive mate to females. What type of selection is occurring?

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E

Match each description with the most appropriate term. -the evolutionary history of a species

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D

According to the Hardy-Weinberg law, if the frequency of a recessive allele is 36 percent, the frequency of the dominant allele is ____ percent.

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​Humans are solely responsible for ____ selection in certain species.

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The fact that the average human birthweight remains at about seven pounds is due to ____.

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Why are small populations more affected by genetic drift than larger ones?

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  -What type of diagram is shown in the accompanying figure? -What type of diagram is shown in the accompanying figure?

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Genetic equilibrium requires ____.

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The only type of speciation observed to occur within a single generation is ____ speciation.

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Match each description with the most appropriate term. -a novel trait present in a clade but not in the clade's ancestors

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  -Midrange forms of a trait can be adaptive while extreme forms of a trait are selected against. Which graph or graphs in the accompanying figure represent this selection phenomenon? -Midrange forms of a trait can be adaptive while extreme forms of a trait are selected against. Which graph or graphs in the accompanying figure represent this selection phenomenon?

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A population that has ____ cannot be in Hardy-Weinberg equilibrium.

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Match the event with the most appropriate term. -the physical disparity in size between male and female gorillas

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  -Which mode of natural selection is demonstrated in A? -Which mode of natural selection is demonstrated in "A"?

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Sympatric speciation occurred in the cichlid fishes within the same lake in Africa. How could this occur without physical separation?

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Parapatric speciation would be expected to occur most often ____.

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Disruptive selection favors ____.

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Match the event with the most appropriate term. -The reduced contribution of one phenotype in comparison to another in the next generation is an example of what?

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Why is the Hardy-Weinberg principle useful in spite of the fact that its conditions are never met in natural populations?

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