Nucleosomes constitute the repeating unit of a structure in nucleus called

Options

A. chromatid
B. nucleolus
C. chromatin
D. telomere

Answer

To answer the question, "Nucleosomes constitute the repeating unit of a structure in the nucleus called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Nucleosomes**:
- A nucleosome is a structural unit of DNA that consists of a segment of DNA wrapped around a core of histone proteins.
- In eukaryotic cells, nucleosomes are formed by DNA coiling around histone octamers.

2. **Identifying the Structure**:
- Nucleosomes are the fundamental building blocks of chromatin, which is the material that makes up chromosomes.
- Chromatin is composed of DNA and proteins, and it exists in two forms: euchromatin (less condensed) and heterochromatin (more condensed).

3. **Connecting Nucleosomes to Chromatin**:
- Nucleosomes are arranged in a repeating pattern along the DNA, creating a structure that helps in packaging the DNA into a compact form.
- This compact structure is essential for fitting the long DNA molecules into the nucleus of the cell.

4. **Final Answer**:
- Therefore, the structure in the nucleus that nucleosomes constitute the repeating unit of is called **chromatin**.