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Random Mechanisms of Evolution

Learn about the random mechanisms of evolution, including genetic drift, which causes changes in allele frequency due to chance in small populations. Explore examples such as the Founder Effect and Bottleneck, as well as gene flow through migration. Additionally, discover how mutations can lead to changes in allele frequency by altering nucleotide sequences.

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Random Mechanisms of Evolution

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  1. Random Mechanisms of Evolution

  2. Genetic Drift • Change in allelefrequency due to chance • Occurs in smallpopulations • Example: Founder Effect, Bottleneck

  3. Gene Flow (Migration) • Change in allele frequency as individualsfrom one population are incorporated into another

  4. Mutation • Changes in allelefrequency caused by a change in nucleotidesequence

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