fatalconfuzmc fatalconfuzmc

21-03-2020
Biology

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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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21-03-2020

Answer:

B

Explanation:

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

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