Question

A nitrogenous base present in the DNA

• A. Adenine
• B. Uracil

Answer 1

The correct option is A

Adenine

The correct option is A.

Explanation of correct option:

1. DNA is a hereditary material in humans and almost all other organisms.
2. The nitrogenous base present in DNA is Adenine (A), Thymine (T), Cytosine (C), and Guanine (G).

Explanation of incorrect option :

Option B:

1. RNA is a single-stranded, molecule similar to DNA.
2. The nitrogenous base present in RNA is Adenine(A), Cytosine (C), Uracil (U), and Guanine(G).
3. Uracil is a pyrimidine present only in the RNA but not in DNA.

Final answer: A nitrogenous base present in the DNA is Adenine.