A Double-Stranded DNA Molecule Contains a Total of 120 Purines

question 61

Multiple Choice

A double-stranded DNA molecule contains a total of 120 purines and 120 pyrimidines. This DNA molecule could be composed of

• A)120 adenine and 120 uracil molecules.
• B)120 thymine and 120 adenine molecules.
• C)120 cytosine and 120 thymine molecules.
• D)240 adenine and 240 cytosine molecules.
• E)240 guanine and 240 thymine molecules.

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