Natural Selection

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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 reproduce more than those that are less adapted.

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TRUE or FALSE: Mutations lead to variation.

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TRUE

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What is evolution?

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Evolution is the change in traits over time in a population.

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How do environmental pressures influence evolution?

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They select for organisms that are better adapted to survive and reproduce.

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Why are mutations important in evolution?

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Mutations bring about genetic variation needed for a population to evolve.

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How does evolution occur?

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Evolution works by small changes passing down through many generations.

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What is genetic variation?

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

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What role do adaptations play in natural selection?

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

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What is the significance of the Hardy-Weinberg equilibrium?

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The Hardy-Weinberg equilibrium describes a population that is not evolving, meaning allele frequencies remain constant.

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What is a common misconception about evolution?

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A common misconception is that individuals evolve during their lifetime; evolution occurs over generations.