Which of the following bases is not present in DNA?
A
Adenine
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B
Guanine
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C
Thymine
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D
Uracil
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Solution
The correct option is D Uracil DNA contains four bases namely adenine (A), guanine (G), cytosine (C) and thymine (T).
RNA also contains four bases, adenine (A), guanine (G), thymine (T) and uracil (U). Hence (d) is correct.