Select the correct word from two options provided in brackets with regards to the statements.A nitrogenous base present in DNA (adenine/ uracil).

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Solution

A nitrogenous base present in DNA is adenine.
$∙$ Nitrogenous base may be a nine-membered, double-ringed purine [adenine (A) or guanine (G)] or a 6-membered, single-ringed pyrimidine [thymine (T) or cytosine (C)] in DNA.
$∙$ Uracil is present in RNA in place of thymine.

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