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Author Question: Which of the following statements about individuals with the HbS allele in the homozygous form is ... (Read 63 times)

littleanan

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Which of the following statements about individuals with the HbS allele in the homozygous form is true?
 
  A. They lack the capacity to digest lactose.
  B. They usually develop fatal cases of sickle-cell anemia.
  C. They rarely develop any form of sickle-cell anemia before reaching reproductive age.
  D. They are usually found in temperate regions of the world.
  E. They always develop fatal cases of sickle-cell anemia late in life.

Question 2

What does gene flow act against?
 
  A. migration
  B. speciation
  C. natural selection
  D. mutations
  E. balanced polymorphisms



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choc0chan

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Answer to Question 1

Answer: B

Answer to Question 2

Answer: B





 

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