Which nitrogenous bases is related to purine:-

Options

A. Adenine
B. Cytosine
C. Uracil
D. Thymine

Answer

To solve the question "Which nitrogenous base is related to purine?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand Nitrogenous Bases**: Nitrogenous bases are the building blocks of nucleic acids (DNA and RNA). They are categorized into two groups: purines and pyrimidines.

2. **Identify Purines**: Purines are a type of nitrogenous base characterized by a double-ring structure. The two main purines found in nucleic acids are:
- Adenine (A)
- Guanine (G)

3. **Identify Pyrimidines**: Pyrimidines are another type of nitrogenous base with a single-ring structure. The pyrimidines include:
- Cytosine (C)
- Thymine (T) (only in DNA)
- Uracil (U) (only in RNA)

4. **Determine the Correct Answer**: Since the question asks for a nitrogenous base related to purine, we can conclude that adenine (A) and guanine (G) are the purines. However, since the question is likely asking for a single answer, adenine is often the most commonly referenced purine in many contexts.

5. **Final Answer**: The nitrogenous base that is related to purine is **Adenine**.