How many hydrogen bonds are formed between adenine and thymine/uracil?

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Study for the Biochemistry Module 6 Exam. Study with flashcards and multiple choice questions; each question includes hints and explanations. Gear up to ace your test!

Multiple Choice

How many hydrogen bonds are formed between adenine and thymine/uracil?

Explanation:
Two hydrogen bonds connect adenine with thymine or with uracil. In Watson–Crick base pairing, A pairs with T (in DNA) or U (in RNA) via two complementary hydrogen-bond interactions, whereas the G–C pair uses three. So the number of hydrogen bonds between adenine and thymine or uracil is two.

Two hydrogen bonds connect adenine with thymine or with uracil. In Watson–Crick base pairing, A pairs with T (in DNA) or U (in RNA) via two complementary hydrogen-bond interactions, whereas the G–C pair uses three. So the number of hydrogen bonds between adenine and thymine or uracil is two.

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