Uracil is present in RNA at the place of :

Options

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

Answer

To answer the question "Uracil is present in RNA at the place of:", we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Components of Nucleic Acids**:
- Nucleic acids, such as DNA and RNA, are made up of nucleotides. Each nucleotide consists of three components: a nitrogenous base, a sugar, and a phosphate group.

2. **Identify the Types of Nitrogenous Bases**:
- There are two types of nitrogenous bases: Purines and Pyrimidines.
- Purines include Adenine (A) and Guanine (G).
- Pyrimidines include Cytosine (C), Thymine (T), and Uracil (U).

3. **Differentiate Between DNA and RNA**:
- DNA (Deoxyribonucleic Acid) contains deoxyribose sugar, while RNA (Ribonucleic Acid) contains ribose sugar.
- Both DNA and RNA contain the purines Adenine and Guanine.

4. **Identify the Pyrimidines in DNA and RNA**:
- In DNA, the pyrimidines are Cytosine (C) and Thymine (T).
- In RNA, the pyrimidines are Cytosine (C) and Uracil (U).

5. **Determine the Replacement**:
- In RNA, Uracil replaces Thymine, which is present in DNA.
- Therefore, Uracil is present in RNA at the place of Thymine.

### Final Answer:
Uracil is present in RNA at the place of Thymine.

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