Biology Concepts

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Anatomical

Back

Relating to bodily structure

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Natural selection

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The process where organisms which are better adapted to their environment are more likely to survive and reproduce

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Common ancestor

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One or more species having traits related to a former organism

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Variation

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Individuals in a population differ from one another.

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Evolution

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Heredity changes in groups of organisms over time

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Homologous structure

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Anatomically similar structure inherited from a common ancestor

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Analogous structure

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Structure that has the same function but NOT from a common ancestor

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Vestigial structure

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Reduced form of a functional structure, indicating common ancestry

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Genome

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The total DNA in each cell nucleus of an organism

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Adaptation

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Inherited characteristics of a species that develops over time in response to environmental factors and enables the species to survive.