Find the odd " Nitrogen base "

Options

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

Answer

To solve the question of identifying the odd nitrogen base among the given options (thymine, cytosine, uracil, and adenine), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of Nitrogen Bases**:
- Nitrogen bases can be classified into two categories: purines and pyrimidines.
- Purines include adenine (A) and guanine (G).
- Pyrimidines include thymine (T), cytosine (C), and uracil (U).

2. **Examine the Given Options**:
- The options provided are:
- Thymine (T)
- Cytosine (C)
- Uracil (U)
- Adenine (A)

3. **Classify Each Option**:
- Thymine (T) - Pyrimidine
- Cytosine (C) - Pyrimidine
- Uracil (U) - Pyrimidine
- Adenine (A) - Purine

4. **Identify the Odd One Out**:
- Among the options, thymine, cytosine, and uracil are all pyrimidines.
- Adenine is the only purine among the options.

5. **Conclusion**:
- Therefore, the odd nitrogen base is **adenine**.

### Final Answer:
Adenine is the odd nitrogen base.

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