Mechanisms of Evolution

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What is Gene Flow?

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The transfer of genetic material between populations, often through migration, which increases genetic variation.

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What is Natural Selection?

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The process by which organisms better adapted to their environment tend to survive and produce more offspring.

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Who proposed the theory of Evolution by Natural Selection?

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Charles Darwin.

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What is Genetic Drift?

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Random fluctuations in the frequencies of alleles from generation to generation due to chance events.

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How does Gene Flow affect genetic variation?

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Gene Flow tends to increase genetic variation (diversity).

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What is a key factor in Natural Selection?

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Survival of the fittest, where the best-adapted individuals survive and reproduce.

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What is Mutation in the context of evolution?

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A change in the DNA sequence that can lead to new traits in a population.

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What is the difference between Gene Flow and Genetic Drift?

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Gene Flow involves the movement of genes between populations, while Genetic Drift is a random change in allele frequencies within a population.

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What role does environmental change play in Natural Selection?

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Environmental changes can create new challenges that affect which traits are favorable for survival.

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What is the significance of a population bottleneck?

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A sharp reduction in population size can lead to reduced genetic diversity and increased genetic drift.