Evolution and Natural Selection

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What is evolution?

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Evolution is the process through which species change over time through genetic variation and natural selection.

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True or False: Individuals undergo evolution.

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False. Evolution occurs at the population level, not at the individual level.

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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 is directional selection?

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Directional selection is a type of natural selection that favors one extreme phenotype over the mean or other extreme phenotypes.

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Who proposed that the Earth is millions of years old?

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James Hutton proposed that the Earth is millions of years old.

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What is an adaptation?

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An adaptation is a trait that enhances an organism's ability to survive and reproduce in its environment.

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What does Darwin's theory of evolution suggest?

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Darwin's theory of evolution suggests that species change over time through the process of natural selection.

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What is the significance of genetic variation in evolution?

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Genetic variation is crucial for evolution as it provides the raw material for natural selection to act upon.

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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 is the process by which nature selects for traits that enhance survival.

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What is the role of mutations in evolution?

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Mutations are changes in DNA that can create new traits, providing the genetic variation necessary for evolution.