How do you know if a population is in Hardy-Weinberg equilibrium? There is no evidence of mutation, gene flow, genetic drift, or natural selection in the population. All of these are clues that a population is in Hardy-Weinberg equilibrium. All mating is random. There is no change in allele frequencies from one generation to the next.
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This means that there are no new alleles being introduced into the gene pool. Show more…
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Imagine you predict a particular frequency for a genotype based upon detailed knowledge of that genotype frequency in population "X" of a species. Then, using the Hardy-Weinberg model, you find that the observed genotype frequency in a different population, named "Y" of the same species, is not significantly different from what you predicted/expected based on population "X". Which of the following should you conclude? Population Y is undergoing mutation, natural selection, genetic drift, and gene flow. Population Y must have diverged, and macroevolution has occurred. The particular gene of interest is not undergoing any mechanisms of evolution. The particular gene of interest is evolving through some mechanism.
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If the observed allele frequencies in a population differ significantly from those predicted by the Hardy-Weinberg equilibrium theory, we have evidence that a) The population is in genetic equilibrium b) Evolution is occurring c) Gene flow is NOT occurring d) Mutations have stopped occurring
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