Mechanism of Evolution

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What is Gene Flow?

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Gene flow is the transfer of genetic material (alleles) between populations through migration or interbreeding, leading to increased genetic diversity.

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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, leading to the evolution of species.

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What is Genetic Drift?

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Genetic drift is a mechanism of evolution that refers to random changes in allele frequencies in a population, often having a more significant effect in small populations.

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What is the Bottleneck Effect?

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The bottleneck effect is a sharp reduction in the size of a population due to environmental events or human activities, leading to a loss of genetic diversity.

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What is Mutation?

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Mutation is a change in the DNA sequence of an organism, which can introduce new alleles into a population and contribute to genetic variation.

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What is Non-random Mating?

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Non-random mating occurs when individuals in a population choose mates based on specific traits, affecting allele frequencies and genetic diversity.

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How does Gene Flow affect a population?

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Gene flow can introduce new alleles into a population, increasing genetic diversity and potentially enhancing adaptability to changing environments.

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What role does Natural Selection play in evolution?

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Natural selection drives evolution by favoring individuals with advantageous traits, leading to changes in allele frequencies over generations.

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How can Genetic Drift lead to evolution?

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Genetic drift can lead to evolution by causing random changes in allele frequencies, which may result in the fixation or loss of alleles in a population.

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What is an example of Mutation in humans?

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An example of mutation in humans is the introduction of blue eyes, which resulted from a random change in the DNA sequence.