Mechanisms of Evolution

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What is Natural Selection?

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Natural Selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

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What is a Gene Pool?

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A Gene Pool is the total collection of genes and their variants in a population.

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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 the frequency of alleles in a population.

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How does Genetic Drift affect small populations?

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Genetic Drift has a more significant impact on small populations because random events can lead to larger changes in allele frequencies.

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What is Genetic Variation?

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Genetic Variation refers to the diversity in gene frequencies within a population.

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What is Sexual Selection?

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Sexual Selection is a mode of natural selection where individuals with certain inherited traits are more likely than others to obtain mates.

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What is Mutation?

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Mutation is a change in the DNA sequence of an organism's genome, which can lead to new traits.

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How does Natural Selection lead to Evolution?

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Natural Selection leads to Evolution by favoring the survival and reproduction of individuals with advantageous traits, gradually changing the population over generations.

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What is the difference between Natural Selection and Genetic Drift?

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Natural Selection is a non-random process that favors advantageous traits, while Genetic Drift is a random process that can lead to changes in allele frequencies.

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What is the effect of Genetic Drift on genetic diversity?

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Genetic Drift decreases genetic diversity because it can lead to the loss of alleles in a population.