A) adenine
B) uracil
C) guanine
D) cytosine
Correct Answer: B
Solution :
Nucleotide contains sugar + base + phosphate. The base present in RNA are adenine; guanine, uracil and cytosine while the base present in DNA are adenine, guanine, thymine and cytosine. Hence, uracil is the base which is found only in the nucleotide of RNA.
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