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State and explain any three factors affecting allele frequency in populations.

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Factors which affect allele frequency in populations:

  1. Genetic Drift: Due to random sampling, there are changes in the frequency of a gene variant. Genetic drift may cause a gene variant to disappear completely and result in reduced genetic variation.
  2. Genetic Recombination: When offspring with traits different from parents are produced, it is called genetic recombination.
  3. Natural Selection: The nature selects only the traits which help an organism to survive in the changed conditions. Natural selection leads to survival of the fittest. Traits that are unfit to survive, perish in the long run, which paves the way for the evolution of a new species.
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