Multiple Choice
Consider the following two scenarios: 1) A flash-flood sweeps through an area and random lemmings are killed,resulting in a change in lemming phenotype in subsequent generations;2) A flash-flood sweeps through an area and some lemmings are able to survive because they are able to hold their breath longer than other lemmings,resulting in a change in lemming phenotype in subsequent generations.What are the primary differences between the two scenarios?
A) Scenario 1 represents genetic drift because changes in the population were not adaptive,while Scenario 2 represents natural selection because some individuals were better adapted than other individuals.
B) Scenario 1 represents natural selection because changes in the population were adaptive,while Scenario 2 represents genetic drift because changes in the population were due to higher fitness of some individuals.
C) Both scenarios represent genetic drift because the flash-flood is a random event.
D) Both scenarios represent natural selection because some individuals survived in each scenario.
Correct Answer:
Verified
Correct Answer:
Verified
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