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Evolution

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Across
4
Structures that are similar in function but did not come from a common ancestor
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Characteristic that can be passed on to offspring
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Competing for food, space, or other resources
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When a favorable trait helps a species survive and reproduce to pass on the trait
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Similar structures that related species have inherited from a common ancestor
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The process of gradual change over time of a species
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All the genes in an organism
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Passing of traits from parent to offspring
Down
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Any difference between members of a species
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A trait that helps an organism survive and reproduce
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Group of organisms belonging to the same species
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The study of the distribution of animals and plants
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Preserved remains of animals, plants, or other organisms
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Form of DNA that is tightly woven and packed
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Any change in DNA of a gene or chromosome
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A segment of DNA on a chromosome that codes for a specific trait
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A group of similar organisms that can reproduce with each other
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Different versions of a gene