Multiple Choice
Which of the following is an example of a postzygotic reproductive barrier?
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23. Speciation
Introduction to Speciation
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Which of the following is an example of behavioral isolation?
A
Insects are unable to mate due to incompatible reproductive organs.
B
Plants release pollen at different times of the year.
C
Two populations of fish are separated by a physical barrier like a dam.
D
Different bird species have unique mating calls that prevent interbreeding.
Verified step by step guidance1
Behavioral isolation is a type of reproductive isolation where two populations develop differences in courtship rituals or other behaviors that prevent them from interbreeding.
Consider the examples provided: Insects with incompatible reproductive organs, plants releasing pollen at different times, fish separated by a physical barrier, and birds with unique mating calls.
Insects with incompatible reproductive organs represent mechanical isolation, not behavioral isolation.
Plants releasing pollen at different times is an example of temporal isolation, where timing prevents interbreeding.
The example of different bird species having unique mating calls is behavioral isolation, as it involves differences in behavior (mating calls) that prevent interbreeding between species.
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