Evolution Vocabulary Review

A species slowly changes over time

• Evolution

• Adaptation

• Variation

• Fitness

Answer explanation

A species evolves, not an individual

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Organisms that are best suited for their environment will survive longer and reproduce. They will pass on their traits.

• Fitness

• Natural Selection

• Adaptation

• Variation

Answer explanation

Natural selection needs variation in order to work.

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A shared relative between 2 different species

• Grandparents

• Evolution

• Common ancestor

• Generation changes

Answer explanation

A common ancestor is a shared ancestor for different species.

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When two organisms have body parts that have the same function, but are not arranged the same way

• Homologous structure

• Vestigial structure

• Analogous structure

Answer explanation

An analogous structure is NOT evidence of a common ancestor.

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Which of the following is NOT a unique trait that evolved in humans?

• Bipedalism

• A large cranium

• Canine Teeth

• Use of tools

When two organisms have body parts that are arranged in similar ways. They also might have similar functions.

• Homologous structure

• Vestigial structure

• Analogous structure

Answer explanation

A homologous structure IS evidence of a common ancestor.

Tags

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A body part that has no function, but may have been useful for the organism's ancestors

• Homologous structure

• Vestigial structure

• Analogous structure

Answer explanation

A vestigial structure IS evidence of a common ancestor.

Studying these allows us to compare organisms that are alive today to organisms that are extinct

• Embryology

• Comparative Anatomy

• DNA Sequencing

• Fossils

Answer explanation

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The process by which modern organisms have descended from ancient organisms is called...

• evolution

• paleontology

• extinction

• fossilization

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Structures that are similar in different species and that have been inherited from a common ancestor are

• analogous structures

• homologous structures

• vestigial structures

• varied structures

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