Biologymedium · Past Paper
What is the relationship between Adenine and Thymine in a double-stranded DNA molecule?
AThey are linked by triple hydrogen bonds
BThey are linked by double hydrogen bonds
CThey are both purines
DThey are both pyrimidines
✓ Correct Answer: B — They are linked by double hydrogen bonds
Adenine and Thymine pair together via two hydrogen bonds, while Cytosine and Guanine pair via three.
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