Explanation:
Packaging Of Dna Double Helix:
Prokaryotes
↬ No well defined nucleus.
↬ DNA is held with some proteins in nucleoid region.
Eukaryotes
↬ Histones:
- ↬ Positively charged proteins.
- ↬ Rich in arginine and lysine.
- ↬ 5 types:- H₁ H₂A, H₂B, H₃ H₄.
↬ Histone octamer:
↬ Nucleosome:
- ↬ DNA (-ve charge) makes two complete turns around the histone octamer (+ve charge) to form a nucleosome.
