Practice Quiz

MCAS Biology Practice

Category - Biology

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Which of the following features of DNA is most important in determining the phenotype of an organism?
  1. the direction of the helical twist
  2. the number of deoxyribose sugars
  3. the sequence of nitrogenous bases
  4. the strength of the hydrogen bonds
Explanation
Answer: C - the sequence of nitrogenous bases.
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