The chemical composition of chromatin is DNA and protein. This implies the correct answer is B.
Chromatin is made of DNA and proteins and can be found in the nucleus of individual cells. The main function of chromatin is to compress the DNA into a smaller unit so that it can be well fit into the nucleus.
In other words, for DNA to be positioned properly within the nucleus it has to be compressed into compact unit and be less voluminous, therefore, the compression is made possible by the chromatin.
<h2>Further Explanation</h2>
The proteins that are present in the chromatin are also known as histones and also carry out certain functions. One of the functions of histones is to arrange DNA into structures also known as nucleosomes. Histones help to provide a base which serves as covers for the DNA.
There about 150 pairs base of DNA sequence that can be found in the nucleosomes. These DNA sequence are covered by a group of eight histones which are also referred to as octamer.
Chromatin allows mitosis and meiosis to take place and its function is also not limited to the controlling of gene expression during DNA replication.
Therefore, the chemical composition of chromatin is DNA and protein
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KEYWORDS:
- dna
- chtomatin
- dna replication
- chemical composition
- nucleus
