Evolution Test Review

What is natural selection?

• The process by which individuals that are better suited to their environment survive and reproduce most successfully.

• The ability of an animal to learn from its environment and change its behavior accordingly.

• A random process that leads to the development of new species over time.

• The process by which individuals intentionally adapt to their environment.

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Which of the following is an example of an adaptation?

• A polar bear's white fur.

• A tree losing its leaves in winter.

• A human learning a new language.

• Both A and B.

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What is the primary mechanism of evolution according to Darwin?

• Mutation.

• Natural Selection.

• Genetic Drift.

• Gene Flow.

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Why is genetic variation important for natural selection?

• It ensures that all individuals in a population are identical.

• It provides a mechanism for populations to evolve over time.

• It decreases the survival chances of a population.

• It has no impact on natural selection.

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What is the ultimate source of genetic variation?

• Natural selection.

• Mutation.

• Genetic drift.

• Gene flow.

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Which of the following best describes the concept of "survival of the fittest"?

• The strongest animals in a population are the only ones that survive.

• Only the fastest animals in a population survive.

• Individuals that are best adapted to their environment are more likely to survive and reproduce.

• Survival is random and not influenced by physical traits or behaviors.

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Where do the genes that determine an individual's traits come from?

• An individual can be born with any genes, since genes are random.

• Individuals grow genes specific to their environment.

• Parents pass their genes down to their offspring

• Parents choose which genes their offspring have when each individual is born

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Traits introduced by mutation will always become more common in a population

• True

• False

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These moths are all the same species. The differences between their wings is an example of ________________

• Natural Selection

• Variation

• Homeostasis

• Extinction

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A population of rabbits grows rapidly from one year to the next. Then one year, a disease strikes approximately one fourth of the adult rabbits. The disease remains with the population in the years that follow.

As explained by Darwin’s theory, which of these conditions allows the rabbit population to evolve by natural selection?

• The disease affects adult and juvenile rabbits equally.

• The disease reduces the ability of the rabbits to reproduce.

• Some rabbits are resistant to the disease, and they pass the resistance to their offspring.

• No rabbits are resistant to the disease, and all die when the disease strikes them.

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