Answers Science 8Evolutionary Relationships

Evolutionary Relationships — Unit test Answers

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Which statement best describes how reproduction leads to natural selection in a population?

Organisms do not produce many offspring, so all of them can survive and pass on their traits.

Organisms overproduce offspring; consequently, all of them are likely to survive and pass on traits.

Organisms overproduce offspring, so only some survive and pass on their traits.

Organisms do not overproduce offspring; therefore, those that are produced will develop the best traits.

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Which best describes how shared characteristics can be used to identify evolutionary relationships?

If organisms have a common ancestor, most of their characteristics will be shared.

If two organisms have a shared characteristic, it means one evolved from the other.

If organisms have many shared characteristics, they are likely to be closely related.

If organisms have a shared characteristic, it means they are closely related.

Which conditions are required for natural selection? Select three options.

Populations have genetic variation.

Organisms overproduce offspring.

Environmental conditions remain stable.

Traits are passed on to only some of the offspring.

Nature selects favorable adaptations.

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