Consider the Following Two Scenarios: 1)A Flash-Flood Sweeps Through an Area

question 12

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.

Understand the contributions of both genetics and environment to the development of temperament.

Comprehend the development phases of a human from conception through the prenatal period.

Recognize the effects of prenatal substance exposure on infant development and health.

Understand infants' perceptual and cognitive capabilities, including habituation and sound discrimination.

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