Evolution

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What is evolution?

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Evolution is the process through which species change over time through variations and natural selection.

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What is natural selection?

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Natural selection is the mechanism by which individuals with favorable traits are more likely to survive and reproduce.

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What is a genetic bottleneck?

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A genetic bottleneck occurs when a population's size is significantly reduced, leading to a loss of genetic diversity.

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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 is the significance of fossils in understanding evolution?

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Fossils provide evidence of past life forms and show how species have changed over time.

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What is genetic drift?

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Genetic drift is a change in the frequency of an existing gene variant in a population due to random sampling.

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What is the founder effect?

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The founder effect occurs when a small group from a population establishes a new population, leading to reduced genetic variation.

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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.

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How do insects and bacteria demonstrate rapid evolution?

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Insects and bacteria reproduce quickly, allowing for faster transmission of advantageous traits through generations.

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What is the role of mutations in evolution?

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Mutations are changes in DNA that can create new traits, which may be beneficial, neutral, or harmful to an organism.