Question

Chromatin is composed of:

• A. Nucleic acid and protein
• B. Only nucleic acid
• C. Only protein
• D. None of these

Hint:

Remember: \[ \text{Chromatin} = \text{DNA} + \text{Histone proteins} \] During cell division, chromatin condenses to form chromosomes.

Answer 1

The Correct Option is A

Step 1: Recall the structure of chromatin. Chromatin is the genetic material present in the nucleus of eukaryotic cells. It appears as a thread-like structure during interphase.
Step 2: Identify the components of chromatin. Chromatin consists of:
DNA (a nucleic acid), which carries genetic information.
Proteins, mainly histones and some non-histone proteins, which help in packaging and regulation of DNA.
Step 3: Eliminate incorrect options.
Only nucleic acid — incorrect, proteins are essential for DNA packaging.
Only protein — incorrect, DNA is the genetic material.
None of these — incorrect.
Hence, the correct answer is \[ \boxed{\text{Nucleic acid and protein}} \]