Mechanisms of Evolution

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What is Gene Flow?

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Gene flow is the transfer of genetic material between populations, often through migration and interbreeding, which can introduce new genetic variations.

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What is Disruptive Selection?

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Disruptive selection is a type of natural selection that favors extreme values of a trait over intermediate values, leading to two or more contrasting phenotypes in a population.

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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, leading to evolutionary changes.

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What does 'Survival of the Fittest' mean?

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'Survival of the fittest' refers to the concept that individuals with traits better suited to their environment are more likely to survive and reproduce.

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What is the role of Mutation in evolution?

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Mutation is a change in the DNA sequence that can introduce new traits into a population, providing raw material for evolution.

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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, which can lead to significant changes over time, especially in small populations.

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What is Stabilizing Selection?

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Stabilizing selection is a type of natural selection that favors average phenotypes and reduces variation, leading to a decrease in extremes.

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How does Natural Selection lead to Adaptation?

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Natural selection leads to adaptation by favoring traits that enhance survival and reproduction in a specific environment, gradually shaping the population.

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What is the significance of Pesticide Resistance in insects?

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Pesticide resistance in insects is an example of natural selection, where individuals with resistance survive and reproduce, leading to a population that is increasingly resistant.

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What is the impact of Predation on population dynamics?

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Predation can influence population dynamics by affecting the survival rates of prey species, leading to changes in population size and structure.