Recall That Two Hydrogen Bonds Bind a and T,but Three

question 54

Multiple Choice

Recall that two hydrogen bonds bind A and T,but three hydrogen bonds bind G and C.The stability of DNA is affected by the number of hydrogen bonds,with more bonds promoting more stability.Double-stranded DNA molecules that have greater stability require more heat to be broken into single strands.Which double-stranded DNA molecules would likely require the lowest temperature in PCR?

• A) A molecule with 16 percent A
• B) A molecule with 23 percent G
• C) A molecule with 30 percent C
• D) A molecule with 35 percent T
• E) More information is required to answer this question.

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