Evolution and Natural Selection

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Publication of "On the Origin of Species"

Back

Darwin's book where he proposed natural selection as a mechanism for evolution.

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Natural Selection

Back

A mechanism for evolution proposed by Darwin.

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Evidence of Evolution

Back

Darwin presented evidence that evolution has been occurring for millions of years.

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Continuity of Evolution

Back

Evolution continues in all living things.

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Evolution by Natural Selection

Back

A process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

Fitness

Back

The ability of an individual to survive and reproduce in its specific environment.

Front

Darwin's Proposal

Back

Darwin proposed that fitness is the result of adaptations.

Front

Adaptation

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An inherited characteristic that increases an organism's chance of survival.

Front

Characteristics not suited to the environment

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Individuals with these characteristics either die or leave few offspring.

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Descent With Modification

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Darwin's principle that each living species has descended, with changes, from other species over time.