Evolution

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What is evolution?

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Evolution is the process by which populations of organisms change over generations through variations and natural selection.

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Do organisms 'decide' to evolve?

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No, organisms do not decide to evolve; they change due to natural selection.

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What is natural selection?

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Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

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What are mutations?

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Mutations are changes in the DNA sequence that can lead to genetic variation in a population.

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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, which is essential for evolution.

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What are homologous structures?

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Homologous structures are anatomical features in different species that share a common ancestry, even if they have different functions.

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What are analogous structures?

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Analogous structures are body parts in different species that have similar functions but do not share a common ancestry.

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What is a vestigial structure?

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A vestigial structure is a body part that has lost its original function through evolution, such as the human appendix.

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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 relationship between adaptation and survival?

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Adaptation is the process by which a species becomes better suited to its environment, enhancing its chances of survival.