Multiple Choice
Which of the following would be an example of a prezygotic barrier?
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23. Speciation
Introduction to Speciation
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Which event would most likely cause geographic isolation in a population?
A
An increase in food availability
B
A mountain range forming between two populations
C
A mutation occurring in a single individual
D
A change in mating behavior within a population
Verified step by step guidance1
Understand the concept of geographic isolation: Geographic isolation occurs when a physical barrier divides a population, preventing individuals from different groups from interbreeding.
Identify the options that could lead to geographic isolation: Look for events that involve physical separation or barriers.
Evaluate the option of a mountain range forming: A mountain range is a significant physical barrier that can separate populations, leading to geographic isolation.
Consider the other options: An increase in food availability, a mutation in an individual, and a change in mating behavior do not involve physical barriers that separate populations.
Conclude that the formation of a mountain range is the event most likely to cause geographic isolation, as it physically divides the population into separate groups.
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