Natural Selection 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 can happen to a species that cannot adapt to a changing environment?

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Extinction.

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Why do some animals have survival advantages in certain environments?

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Survival advantages often arise from adaptations that help them cope with environmental conditions, such as thick fur in cold climates.

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What is an adaptation?

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

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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, which can lead to different traits.

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How does mutation contribute to evolution?

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Mutations can create new alleles, which may provide advantages or disadvantages in survival and reproduction.

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What is the role of competition in natural selection?

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Competition for resources can influence which individuals survive and reproduce, shaping the traits of future generations.

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What is insecticide resistance?

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Insecticide resistance is the ability of insects to survive exposure to insecticides due to genetic changes.

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How can environmental changes lead to evolution?

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Environmental changes can create new challenges that require species to adapt, leading to evolutionary changes over time.

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What is the significance of survival rates in a population?

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Survival rates indicate how well a population can withstand environmental pressures and can reflect the effectiveness of adaptations.