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12th Biology 2012 Set1 Outside Delhi Board Paper Solution

Question 9

(a) Draw a neat labeled diagram of a nucleosome.
(b) Mention what enables histones to acquire a positive charge.

Answer

(a) Structure of Nucleosome

 

(b) Histones are positively charged proteins which are rich in amino acids that contain positively charged side chain. Eg- Arginine, Lysine.