Evolution

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What is Evolution?

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Change over time.

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What are Molecular Homologies?

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The more similar DNA, the closer related organisms are.

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What are Analogous Structures?

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Structures that have the same job but different structures, like bird, bat, and butterfly wings.

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What are Homologous Structures?

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Structures that are similar in different species due to shared ancestry.

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What are Vestigial Structures?

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Structures that are no longer needed, like wisdom teeth in humans or hip bones in whales.

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What is Natural Selection?

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The process where an organism that is better suited for the environment survives and reproduces.

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What is a Trait?

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A characteristic or feature of an organism.

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What is Adaptation?

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A trait that helps an organism survive in its environment.

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What is Speciation?

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The process by which new species arise.

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What is Genetic Variation?

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Differences in DNA among individuals within a population.