Multiple Choice
What is behavioral isolation in the context of speciation?
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23. Speciation
Introduction to Speciation
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Which of the following provides an example of mechanical isolation as a prezygotic barrier?
A
Incompatible reproductive organ structures in two insect species
B
Differences in mating calls between two frog species
C
Seasonal differences in mating times between two plant species
D
Geographical separation of two populations of birds
Verified step by step guidance1
Understand the concept of prezygotic barriers: These are mechanisms that prevent mating or fertilization between different species. Mechanical isolation is one type of prezygotic barrier.
Define mechanical isolation: It occurs when differences in the size or shape of reproductive organs prevent successful mating between species.
Analyze the options given: Look for the option that describes a physical or structural difference that prevents mating.
Option 1: 'Incompatible reproductive organ structures in two insect species' directly describes mechanical isolation, as it involves physical incompatibility.
Review other options: Differences in mating calls, seasonal mating times, and geographical separation are examples of other types of prezygotic barriers, such as behavioral, temporal, and geographical isolation, respectively.
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