Experiments Have Shown That DNA with a Higher G

question 84

Multiple Choice

Experiments have shown that DNA with a higher G + C content requires a higher temperature to disrupt its double helix than DNA with a higher A + T content.Which statement explains this observation?

• A) G and C fit together better than A and T.
• B) The two chains assume a parallel orientation when the A + T content is higher.
• C) The sugar-phosphate bonds in the backbone are stronger in DNA with a higher G + C content.
• D) The covalent bonds between G and C are stronger than those between A and T.
• E) G-C pairs form three hydrogen bonds, whereas A-T pairs form just two hydrogen bonds.

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