Which of the Following Is MOST Responsible for Determining the Structural

question 44

Multiple Choice

Which of the following is MOST responsible for determining the structural stability of double-stranded DNA?

• A) The attractive interaction between positively charged purines and negatively charged pyrimidines.
• B) H-bonding between the OH of deoxyribose and purine and pyrimidine ring nitrogens.
• C) Hydrophobic interaction between contiguous base pairs and hydrogen bonding between complementary bases on opposite strands.
• D) Interaction between the phosphate groups in separate chains.
• E) Hydrophilic interaction between the pentoses in separate chains.

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