DNA differs from RNA in the nature of

Options

A. sugar alone
B. purines alone
C. sugar and pyrimidines
D. sugar and purines

Explanation

To answer the question "DNA differs from RNA in the nature of," we will analyze the key differences between DNA and RNA step by step.

### Step-by-Step Solution:

1. **Identify the Components of DNA and RNA**:
- DNA (Deoxyribonucleic Acid) and RNA (Ribonucleic Acid) are both nucleic acids that serve as genetic material.
- They are composed of nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base.

2. **Compare the Sugars**:
- The sugar in DNA is **deoxyribose**.
- The sugar in RNA is **ribose**.
- This difference in sugar is significant as it affects the stability and structure of the molecules.

3. **Examine the Nitrogenous Bases**:
- DNA contains the nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G).
- RNA contains the nitrogenous bases: adenine (A), uracil (U), cytosine (C), and guanine (G).
- Here, thymine in DNA is replaced by uracil in RNA, which is another important difference.

4. **Analyze the Structure**:
- DNA is typically found in a **double helix** structure, meaning it has two strands that are complementary and wound around each other.
- RNA is usually **single-stranded**, which allows it to fold into various shapes for its functions.

5. **Conclusion**:
- Based on these differences, we conclude that DNA differs from RNA in the nature of both the sugar (deoxyribose vs. ribose) and the nitrogenous bases (thymine vs. uracil).

### Final Answer:
DNA differs from RNA in the nature of **sugar and pyrimidine** (thymine in DNA vs. uracil in RNA).

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