Dna does not contain the nitrogen base a. adenine b. cytosine c. uracil d. thymine

The correct answer will be option-C.

Explanation:

Deoxyribose nucleic acid or DNA is the genetic material of the organisms.

The DNA exists in double-helical form whee each strand is composed of nucleotides. Each nucleotide is composed of a five-carbon sugar, four types of nitrogenous bases: adenine, guanine, cytosine and thymine and a phosphate group. They lack uracil which is a component of the Ribonucleic acid strands.

Thus, Option-C is the correct answer.

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