Chromatin is mainly complex of :-

Options

A. RNA & DNA
B. RNA & Histone
C. Ribozyme & RNA
D. DNA & Histone

Answer

**Step-by-Step Solution:**

1. **Understanding Chromatin**: Begin by defining what chromatin is. Chromatin is a complex of DNA and proteins found in the nucleus of eukaryotic cells. It plays a crucial role in packaging DNA into a smaller volume to fit in the nucleus and also in gene regulation.

2. **Analyzing the Options**: The question provides multiple options regarding what chromatin is mainly composed of. We need to evaluate each option to determine which one correctly describes the composition of chromatin.

3. **Evaluating Option 1 (RNA and DNA)**: This option suggests that chromatin is made up of RNA and DNA. However, this is incorrect because chromatin primarily consists of DNA and proteins, not RNA.

4. **Evaluating Option 2 (RNA and Histones)**: This option includes RNA and histones. While histones are indeed proteins that help package DNA into chromatin, the inclusion of RNA makes this option incorrect.

5. **Evaluating Option 3 (Ribozymes and RNA)**: This option mentions ribozymes and RNA. Ribozymes are RNA molecules that can act as enzymes, but they are not components of chromatin. Therefore, this option is also incorrect.

6. **Evaluating Option 4 (DNA and Histones)**: This option states that chromatin is composed of DNA and histones. This is the correct answer, as histones are the proteins that bind to DNA, facilitating its packaging into chromatin.

7. **Conclusion**: Based on the analysis of the options, the correct answer to the question "Chromatin is mainly complex of:" is **DNA and Histones**.

**Final Answer**: Chromatin is mainly a complex of **DNA and Histones**.

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