Evolution Review

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What is an adaptation?

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An adaptation is a characteristic or trait that helps an organism survive and reproduce in its environment.

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What is natural selection?

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

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What is evolution?

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Evolution is the change in the heritable characteristics of biological populations over successive generations.

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What causes variation in species?

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Variation in species is primarily caused by mutations, which are changes in the DNA sequence.

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What is the role of mutations in evolution?

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Mutations introduce new traits in a population, which can lead to variations that may be beneficial for survival.

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What is speciation?

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Speciation is the process by which new species arise from existing species due to evolutionary processes.

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How do environmental changes affect species?

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Environmental changes can lead to adaptations, survival of the fittest, or extinction of species that cannot adapt.

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What is genetic variation?

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Genetic variation refers to the differences in DNA among individuals within a species.

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What is the significance of the fossil record?

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The fossil record provides evidence of past life forms and shows how species have changed over time.

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What is the difference between artificial selection and natural selection?

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Artificial selection is the process by which humans breed organisms for desired traits, while natural selection occurs without human intervention.