In a DNA double helix, which base pairs with adenine (A)?
Answer and explanation
Correct answer: B. Thymine (T), joined to adenine by two hydrogen bonds
- Step 1: Base pairing in DNA is specific. Step 2. A pairs with T, and G pairs with C. Answer: thymine. Why not the others: C and G pair with each other, and uracil replaces thymine only in RNA.
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