Natural Selection

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Evolution

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the gradual change in species over time

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Natural Selection

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a process by which individuals that are better adapted to their environment are more likely to survive and reproduce than others that are not

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Mutation

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any change in the DNA of an organism.

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Adaptation

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behavior or physical characteristic that allows an organism to survive and reproduce in its environment

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Charles Darwin

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British naturalist who formulated the theory of Evolution by natural selection

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Variation

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any difference between organisms of the same species

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Diversity

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the variety of organisms that inhabit the Earth

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Fossil

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the preserved remains or traces of an organism that lived in the past

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Missing Link

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gaps in the fossil record that provide proof of Evolution

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Homologous Structure

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similar structures that related species have inherited from a common ancestor (example – bones in bird’s wing, dolphin fin, and dog leg are very similar)