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Genetic Material

Question

DNA differs from RNA in having
Cytosine but no guanine
Thymine but no uracil
Thymine but no cytosine
Uracil but no thymine

A

Uracil but no thymine

B

Cytosine but no guanine

C

Thymine but no uracil

D

Thymine but no cytosine

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Solution

Verified by Toppr

The correct option is B Thymine but no uracil
The nitrogenous bases are purines and pyrimidines. The purines are adenine and guanine. The pyrimidines are thymine, uracil, and cytosine.
DNA differs from RNA in nitrogenous bases.
In DNA, the thymine present but in RNA it is replaced by uracil.
So, the correct answer is option B.

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