Evidence of Evolution

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What is evidence of evolution?

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Evidence of evolution refers to the various types of data and observations that support the theory of evolution, including fossil records, genetic similarities, and anatomical structures.

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What are homologous structures?

Back

Homologous structures are anatomical features in different species that share a common ancestry, even if they have different functions.

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What are vestigial structures?

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Vestigial structures are body parts that have lost their original function through the course of evolution, such as the pelvic bones in whales.

Front

What does it mean if two organisms have very similar DNA sequences?

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It indicates that the organisms are closely related and likely share a common ancestor.

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What is a common ancestor?

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A common ancestor is a species from which two or more different species have evolved.

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How do fossil records provide evidence for evolution?

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Fossil records show the changes in species over time and can illustrate the transition from one species to another.

Front

What is the significance of the pelvic bone in whales?

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The pelvic bone in whales is a vestigial structure, indicating that their ancestors were land mammals.

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What is the difference between homologous and analogous structures?

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Homologous structures arise from a common ancestor, while analogous structures evolve independently to serve similar functions.

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What role does natural selection play in evolution?

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Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

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What is the importance of genetic variation in a population?

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Genetic variation is crucial for a population's ability to adapt to changing environments and survive over time.