A Series of Strong Storms Opened a Stream Channel Between

question 42

Multiple Choice

A series of strong storms opened a stream channel between two lakes.The western lake contains a large,diverse population of a species of minnow.The eastern lake has never been populated by fish.When the channel opened,a small group of fish migrated to the eastern lake.Soon after,the stream channel dried up and was never opened again.The fish in the eastern lake thrived and continued to reproduce,building a large population over time.Compared with the fish in the western lake,what characteristics would you expect the population in the eastern lake to exhibit?

• A) reduced genetic diversity but no change in allele frequency
• B) reduced genetic diversity and a change in allele frequency
• C) no change in genetic diversity but a change in allele frequency
• D) no change in either genetic diversity or allele frequency
• E) The information provided is insufficient to answer the question.

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Definitions:

Imitate

To copy or mimic the actions, appearance, or speech of another person or thing, often to learn or practice a specific behavior or skill.

Aggressive Behavior

Actions intended to harm or intimidate others, which can be a response to a perceived threat or a means to assert dominance.

Passive Avoidance

A learning process in which an individual learns to refrain from certain behaviors to avoid a negative outcome.

Mild Punishing Stimuli

Stimuli that are not severely harmful or painful but are used to decrease the likelihood of a behavior recurring.