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Solution


Q.

DNA molecule contains 4 bases whose structure are shown below. One of the structure is not correct, identify the incorrect base structure.           [2024]
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Ans.

(4)

DNA contains four bases viz. adenine (A), guanine (G), cytosine (C) and thymine (T). RNA also contains four bases, the first three bases are same as in DNA but the fourth one is uracil (U).