Submitted the document for the case study in “Changing Allele Frequencies” and it contained the following:

  • Explained why the increased prevalence of sickle-cell disease among African Americans has more to do with the environmental factors than the skin color or other phenotypes used to define races. (10)
  • Described other examples of balanced polymorphism. (10)
  • Identified a population group (other than African Americans) with a high prevalence of sickle-cell disease. (10)
  • Listed six genetic diseases more common among Ashkenazi Jews than among other population groups. (10)

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