Natural Selection and Evolution Review

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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 evolution?

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

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What is a fossil?

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A fossil is the preserved remains or traces of a once-living organism, providing evidence for evolution.

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What are variations in a species?

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Variations are differences in physical traits of an individual from the group to which it belongs.

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What is adaptation?

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Adaptation is a trait that helps an organism survive and reproduce in its environment.

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What is fitness in biological terms?

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Fitness refers to an organism's ability to survive and reproduce in its environment.

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What role does genetics play in evolution?

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Genetics provides the variation upon which natural selection acts, influencing traits passed to the next generation.

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What is the significance of genetic mutations?

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Genetic mutations can introduce new traits into a population, which may be beneficial, harmful, or neutral.

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How do environmental changes affect evolution?

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Environmental changes can create new challenges for survival, leading to natural selection of traits that are advantageous.

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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.