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The nitrogenous bases cytosine and thymine are a. purines. b. a phosphate group. c. a sugar group. d. pyrimidines.
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The nitrogenous bases cytosine and thymine are

a. purines.
b. a phosphate group.
c. a sugar group.
d. pyrimidines.

User James Elegan
by
8.5k points

1 Answer

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Purines are adenine and guanine. So the answer should be D (Pyrimidines). besides, phosphate group and pentose sugar are a part of a nucleotide.
User Mhttk
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