There Is an Island in the Middle of a Large

question 16

Multiple Choice

There is an island in the middle of a large river that houses a large population of ants. Damming of the river causes the island to flood and only the highest points of the island are now above water. The ants cannot swim, so are now in multiple isolated populations. Which of the following best describes this event?

• A) This situation represents isolation by dispersal.
• B) This situation represents isolation by vicariance.
• C) This situation represents a form of sympatric speciation.
• D) Only a rare development of polyploidy could lead to speciation in this case.
• E) Speciation will not occur in this case because of gene flow.

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Definitions:

Recalling

The cognitive process of bringing stored information back into conscious awareness.

Random Events

Incidents or occurrences that happen without a predictable pattern or plan.

Retrieval Cues

Stimuli or signals that help in the recovery of memories stored in the brain, making it easier to retrieve information when needed.

Recognizing

The process of identifying a previous experience, object, or person from one's memory.