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Questions and Answers
Which of the following best describes genetic drift?
Which of the following best describes genetic drift?
- The change in the frequency of an existing gene variant due to natural selection
- The change in the frequency of an existing gene variant due to genetic recombination
- The change in the frequency of an existing gene variant due to random chance (correct)
- The change in the frequency of an existing gene variant due to mutation
What is the potential outcome of genetic drift?
What is the potential outcome of genetic drift?
- Increase in genetic variation
- Increase in natural selection
- Increase in mutation rate
- Decrease in genetic variation (correct)
When does the effect of genetic drift become more notable?
When does the effect of genetic drift become more notable?
- When mutation rate is high
- When few copies of an allele exist (correct)
- When many copies of an allele exist
- When natural selection is strong
Who held the view that genetic drift plays at most a minor role in evolution?
Who held the view that genetic drift plays at most a minor role in evolution?
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In the middle of the 20th century, what was the dominant view regarding the importance of genetic drift in evolution?
In the middle of the 20th century, what was the dominant view regarding the importance of genetic drift in evolution?
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