If A is wrapped around B and and the resultant C is produced , then A ,B,C represents,?

Options

A. `{:(A,B,C),("RNA", "H1 histone ","Non - histone protein"):}`
B. `{:(A,B,C),("DNA","Histone octamer ","nucleosome"):}`
C. `{:(A,B,C),("DNA","Histone octamer","H1 histone"):}`
D. `{:(A,B,C),("DNA","H1 histone","H1 Histone tetramer"):}`

Answer

To solve the question, "If A is wrapped around B and the resultant C is produced, then A, B, and C represent what?", we can break it down step by step:

### Step-by-Step Solution:

1. **Identify A, B, and C**:
- In the context of DNA packaging, we can identify:
- **A** as DNA.
- **B** as histone proteins.
- **C** as nucleosomes.

2. **Understand the Role of Histones**:
- Histones are basic proteins that play a crucial role in the packaging of DNA in eukaryotic cells. They are rich in amino acids such as lysine and arginine, which are positively charged.

3. **Interaction Between DNA and Histones**:
- DNA is negatively charged and slightly acidic. The positive charge of histones attracts the negatively charged DNA, allowing them to bind together.

4. **Formation of Nucleosomes**:
- When DNA wraps around a histone octamer (which consists of 8 histone proteins), it forms a structure called a nucleosome. This nucleosome is the fundamental unit of chromatin.

5. **Structure of Chromatin**:
- The nucleosomes are connected by linker DNA, creating a "beads on a string" appearance when viewed under an electron microscope. Each bead represents a nucleosome, and the string represents the linker DNA.

6. **Conclusion**:
- Therefore, in this context:
- **A (DNA)** is wrapped around **B (histone proteins)** to produce **C (nucleosomes)**.

### Final Answer:
- A = DNA
- B = Histone proteins
- C = Nucleosomes