Evolution Pre-Test

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What are adaptations?

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Adaptations are traits that enhance an organism's ability to survive and reproduce in its environment.

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Where do adaptations come from?

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Adaptations come from mutations that give an organism an advantage in its environment and genetic recombination during meiosis.

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What is natural selection?

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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 drives natural selection?

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Natural selection is driven by changes in the environment and the survival of the fittest.

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What is a vestigial structure?

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A vestigial structure is a body part that has lost its original function through evolution, such as the tailbone in humans.

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What is genetic recombination?

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Genetic recombination is the process by which genetic material is physically mixed during meiosis, leading to offspring with combinations of traits.

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What is the significance of DNA similarity in closely related organisms?

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Closely related organisms have very similar DNA sequences, indicating a common ancestor.

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What are the potential problems with selective breeding?

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Selective breeding can lead to health problems in animals due to reduced genetic diversity.

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What is the role of mutations in evolution?

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Mutations introduce new genetic variations that can lead to adaptations in organisms.

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How does environmental change affect natural selection?

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Environmental changes can alter the survival challenges faced by organisms, influencing which traits are favored.