Why Is Thymine Used in DNA Rather Than Uracil

question 89

Multiple Choice

Why is thymine used in DNA rather than uracil?

• A) Thymine is more hydrophobic, so it stacks better in the helix.
• B) If cytosine is deaminated, it forms uracil, which can be easily distinguished from thymine.
• C) Thymine is not capable of wobbling, so it pairs more accurately than uracil.
• D) All of these are correct.

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