Chromatin is chemically made of

Options

A. Nucleic acid, histone and non-histone proteins
B. Nucleic acid and histone proteins
C. Nucleic acid and non-histone proteins
D. Nucleic acid

Answer

**Step-by-Step Solution:**

1. **Understanding Chromatin**: 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 protect the DNA structure and sequence.

2. **Components of Chromatin**: Chromatin is primarily made up of nucleic acids (DNA and RNA) and proteins. The proteins associated with chromatin can be classified into two main categories: histone proteins and non-histone proteins.

3. **Role of Histones**: Histones are a type of protein that help in the packaging of DNA. They form a core around which DNA winds, allowing for the compact structure of chromatin.

4. **Role of Non-Histone Proteins**: Non-histone proteins also play various roles in chromatin structure and function, including regulation of gene expression and DNA replication.

5. **Conclusion**: Based on the components identified, chromatin is chemically made of nucleic acids (DNA and RNA), histone proteins, and non-histone proteins. Therefore, the correct answer is that chromatin is made of nucleic acid, histone, and non-histone proteins.

**Final Answer**: Chromatin is chemically made of nucleic acid (DNA and RNA), histone proteins, and non-histone proteins.

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