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The structure of dna is held together by ? A. purines pairing with pyridimines B. hydrogen bonds between adenine and thymine C. attraction between cytosine and guanine. D. All of the above
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The structure of dna is held together by ?

A. purines pairing with pyridimines
B. hydrogen bonds between adenine and thymine
C. attraction between cytosine and guanine.
D. All of the above

User Bertina
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1 Answer

3 votes

Answer:

B

Step-by-step explanation:

nitrogenous bases on the two strands of DNA pair up, held together by weak hydrogen bonds.

User Pedro Vieira
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