Evolution and Natural Selection

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What is evolution?

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Change in a kind of organism over time; process by which modern organisms have descended from ancient organisms.

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What happens to organisms with traits that are best suited to the environment according to Darwin?

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They increase in number.

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Define natural selection.

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Organisms with traits well suited to their environment survive and reproduce at a greater rate.

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What do individuals who cope better with environmental challenges tend to do?

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Increase in population over time.

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What is a trait that makes a species better suited to survive in its environment called?

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Adaptation.

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What is genetic variation?

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Differences in the DNA sequence among individuals.

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What is the role of inherited characteristics in natural selection?

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Inherited characteristics that increase chances of survival are favored.

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What is the significance of adaptation in evolution?

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Adaptations help organisms survive and reproduce in their specific environments.

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How does competition affect natural selection?

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Organisms compete for limited resources, leading to survival of the fittest.

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What is the relationship between natural selection and extinction?

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Natural selection can lead to extinction if a species cannot adapt to changing environments.

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