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MMLU-Pro / 2825 / The frequency of the gene for sickle-cell anemia in African-Americans is less…

Problem

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question

The frequency of the gene for sickle-cell anemia in African-Americans is less than that found in the people living in their ancestral home in Africa. What factors might account for this difference?

category

biology

options

  1. Sickle-cell disease is more deadly in America
  2. Sickle-cell disease has been completely eradicated in America
  3. The sickle-cell gene mutates at a lower rate in America
  4. Genetic drift has led to a decrease in the frequency of the sickle-cell gene in African-Americans
  5. Increased medical intervention in America allows individuals with sickle-cell disease to live longer and reproduce more
  6. There is no difference in the frequency of the sickle-cell gene between African-Americans and their African ancestors
  7. In America, the incidence of malaria is insignificant, sickle-cell genes are being diluted by normal genes and interracial marriages.
  8. There is a higher survival rate for sickle-cell carriers in America
  9. Sickle-cell allele is more dominant in Africa
  10. The sickle-cell allele is being actively selected against in the African-American population

src

stemez-Genetics

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