Question

Which of the following histones is NOT part of the nucleosome core?

• A. H1
• B. H2
• C. H3
• D. H4

Hint:

Nucleosome core: H2A, H2B, H3, H4 (two copies each).
H1: linker histone, not part of core.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Nucleosomes are the structural units of chromatin.
They consist of DNA wrapped around histone proteins.

Step 2: Key Formula or Approach:
No specific formula.
Need to know the components of nucleosomes.

Step 3: Detailed Explanation:
The nucleosome core consists of two copies each of H2A, H2B, H3, and H4.
The H1 histone is a linker histone.
It binds to the DNA between nucleosomes.
Thus, H1 is NOT part of the nucleosome core.

Step 4: Final Answer:
H1 is NOT part of the nucleosome core.
Hence, the correct option is (A).