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Q.
The base not present in DNA is :
AFMCAFMC 2002
Solution:
Deoxyribonucleic acid (DNA) contains two types of nitrogenous base
(a) Purines $\rightarrow$ Adenine and guanine
(b) Pyrimidine $\rightarrow$ Thymine and cytosine
RNA also consist of same base pairs except thymine, in place of which uracil is present.