One of the characteristic of DNA is -

Options

A. Uracil
B. Deoxyribose sugar
C. Single strandedness
D. Ability of protein synthesis

Answer

**Step-by-Step Solution:**

1. **Understanding DNA Structure**: DNA, or deoxyribonucleic acid, is a long polymer made up of repeating units called nucleotides. Each nucleotide consists of three components: a nitrogenous base, a deoxyribose sugar, and a phosphate group.

2. **Identifying Components of Nucleotides**: The nitrogenous bases in DNA include adenine (A), thymine (T), cytosine (C), and guanine (G). The sugar component in DNA is specifically deoxyribose, which distinguishes it from RNA (ribonucleic acid), which contains ribose sugar.

3. **Evaluating the Options**:
- **Uracil**: This is a nitrogenous base found in RNA, not DNA.
- **Deoxyribose**: This is the sugar component of DNA, making it a characteristic feature.
- **Sugar**: While DNA does contain sugar, the specific type (deoxyribose) is what makes it distinct from RNA.
- **Single Strandedness**: DNA is typically double-stranded, whereas RNA is single-stranded.
- **Ability of Protein Synthesis**: DNA itself does not synthesize proteins directly; it serves as a template for RNA synthesis, which then translates into proteins.

4. **Conclusion**: The characteristic that is specific to DNA among the provided options is **deoxyribose sugar**.

**Final Answer**: The characteristic of DNA is **deoxyribose**.

---