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Question

What is the structure of Chromatin?


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Solution

Chromatin:

  1. The genetic material or macromolecule known as chromatin, which makes up the chromosomes in the nucleus of a eukaryotic cell, is composed of DNA, RNA, and related proteins.
  2. The cell nucleus contains this chromatin. These genomic components' primary purposes are:
    1. Avoiding DNA deterioration.
    2. Support the DNA molecule to enable the meiosis and mitosis phases of the cell cycle.
    3. DNA is packed tightly to fit inside the cell.
  3. When viewed via an extended light microscope, the structure of chromatin, or the so-called nucleosomes, resembles how the string is arranged on beads.
  4. Eight proteins known as histones surround the DNA found inside each nucleosome.
  5. These nucleosomes are later wrapped into a 30 nm structure called a solenoid. In order to support the chromatin structure, histone proteins are present.


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