Gene is formed of

Options

A. Polynucleotide
B. Histone
C. Hydrocarbons
D. Lipoprotein

Answer

To answer the question "Gene is formed of," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Definition of a Gene**:
- A gene is a segment of DNA or RNA that contains the instructions for making a specific protein or functional RNA.

2. **Identifying the Components of DNA/RNA**:
- DNA (Deoxyribonucleic Acid) and RNA (Ribonucleic Acid) are both made up of smaller units called nucleotides.

3. **Defining Nucleotides**:
- Each nucleotide consists of three components: a sugar molecule, a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, guanine in DNA; uracil replaces thymine in RNA).

4. **Understanding Polynucleotides**:
- A polynucleotide is a polymer made up of many nucleotides linked together by covalent bonds. This structure forms the backbone of DNA and RNA.

5. **Conclusion**:
- Since a gene is essentially a sequence of nucleotides, it can be concluded that a gene is formed of polynucleotides.

### Final Answer:
- **Gene is formed of**: **Polynucleotide**

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