Multiple Choice
Which of the following best illustrates the concept of 'descent with modification' in natural selection?
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1. Introduction to Biology
Natural Selection and Evolution
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Which of the following best describes the difference between behavioral isolation and temporal isolation in the process of speciation?
A
Both behavioral and temporal isolation involve differences in physical appearance that prevent mating.
B
Behavioral isolation occurs when species have different mating rituals, while temporal isolation occurs when species breed at different times.
C
Behavioral isolation is caused by physical barriers, while temporal isolation is caused by genetic incompatibility.
D
Behavioral isolation prevents fertilization after mating, while temporal isolation prevents gamete formation.
Verified step by step guidance1
Understand the concept of speciation: Speciation is the process by which populations of the same species evolve to become distinct species. Isolation mechanisms, such as behavioral and temporal isolation, play a key role in this process by preventing interbreeding.
Define behavioral isolation: Behavioral isolation occurs when two populations of the same species develop differences in mating behaviors, such as courtship rituals, songs, or other behaviors that are specific to attracting mates. These differences prevent individuals from recognizing each other as potential mates.
Define temporal isolation: Temporal isolation occurs when two populations of the same species reproduce at different times. This could involve differences in mating seasons, times of day, or other temporal factors that prevent individuals from mating with each other.
Compare the two types of isolation: Behavioral isolation is based on differences in mating behaviors, while temporal isolation is based on differences in the timing of reproduction. Neither involves physical appearance or genetic incompatibility directly.
Eliminate incorrect options: Review the provided answer choices and eliminate those that incorrectly describe behavioral and temporal isolation. The correct answer should highlight that behavioral isolation involves differences in mating rituals, while temporal isolation involves differences in breeding times.
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