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Understanding Hardy-Weinberg Equilibrium and Population Evolution

Learn how the Hardy-Weinberg equilibrium model provides a framework for understanding population evolution. Explore the conditions necessary for a population to remain in equilibrium and the real-world comparisons to this model. Discover the importance of studying population evolution using models.

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Understanding Hardy-Weinberg Equilibrium and Population Evolution

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  1. KEY CONCEPT Hardy-Weinberg equilibrium provides a framework for understanding how populations evolve.

  2. Hardy-Weinberg equilibrium describes populations that are not evolving. • Biologists use models to study populations. • Hardy-Weinberg equilibrium is a type of model.

  3. Hardy-Weinberg equilibrium describes populations that are not evolving. • Genotype frequencies stay the same if five conditions are met. • very large population: no genetic drift • no emigration or immigration: no gene flow • no mutations: no new alleles added to gene pool • random mating:no sexual selection • no natural selection:all traits aid equallyin survival

  4. Hardy-Weinberg equilibrium describes populations that are not evolving. • Real populations rarely meet all five conditions. • Real population data iscompared to a model. • Models are used tostudying how populationsevolve.

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