Question 1:

Which of the following is a major factor contributing to human genetic variation?

A) Genetic drift
B) Gene flow
C) Mutation
D) All of the above

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Explanation: Human genetic variation is influenced by multiple factors. These include genetic drift, which refers to random changes in allele frequencies; gene flow, which is the movement of genes between populations through migration; and mutation, which generates new genetic variation. Therefore, the correct answer is D) All of the above.

Question 2:

Which of the following statements about human migration and genetic diversity is true?

A) Human migration has increased genetic diversity within populations
B) Human migration has reduced genetic diversity within populations
C) Human migration has no impact on genetic diversity within populations
D) Genetic diversity is unrelated to human migration

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Explanation: Human migration has increased genetic diversity within populations. As populations migrate and mix with each other, new genetic variants are introduced, leading to increased diversity. Migration allows for the exchange of genetic material and the blending of previously isolated gene pools, thereby enhancing genetic diversity.

Question 3:

What is the study of the distribution of genetic variation in human populations called?

A) Genetic drift
B) Population genetics
C) Human genomics
D) Comparative genomics

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Explanation: The study of the distribution of genetic variation in human populations is called population genetics. It involves analyzing the patterns of genetic diversity, allele frequencies, and genetic structure within and between human populations to understand evolutionary processes and human history.

Question 4:

Which of the following is an example of natural selection acting on human populations?

A) Lactose intolerance
B) Eye color variation
C) Height variation
D) All of the above

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Explanation: Natural selection has acted on various traits in human populations. One example is lactose intolerance, where individuals lacking the ability to digest lactose have a selective advantage in regions where dairy farming and consumption of milk are less prevalent. Eye color and height variation in humans also show some degree of genetic influence influenced by natural selection. Therefore, the correct answer is D) All of the above.

Question 5:

What is the concept of "human genetic ancestry" based on?

A) Shared genetic variants among all human populations
B) Genetic similarities among individuals within the same population
C) Genetic differences among different human populations
D) The presence of specific disease-related genes in certain populations

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Explanation: The concept of "human genetic ancestry" is based on genetic differences among different human populations. By analyzing genetic markers and comparing genetic variation across populations, scientists can reconstruct the evolutionary history and patterns of human migration, providing insights into human genetic ancestry and relationships among populations.