Which base is present in RNA but not in DNA?
(a) Uracil
(b) Cytosine
(c) Guanine
(d) Thymine.

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2 Answers

(a) : RNA contains cytosine and uracil as pyrimidine bases while DNA has cytosine and thymine. Both have the same purine bases i.e. guanine and adenine.

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Correct Option (a) Uracil

Explanation:

Uracil is present in RNA but not in DNA,

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