Practice Quiz

MCAS Biology Practice

Category - Biology

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Which of the following statements best describes why the change in only one DNA base of the hemoglobin gene results in a different protein product of the gene?
  1. The change prevents mRNA from being made.
  2. The change alters the amino acid sequence of the protein.
  3. The change causes the blood cells to divide in an uncontrolled way
  4. The change creates a second strand of mRNA for each RNA molecule.
Explanation
Answer: B - The change alters the amino acid sequence of the protein.
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