Which of the following statements are correct with reference to packaging of DNA helix ? A. Histones are organized to form a unit of eight molecules called histone octamer. B. Histones are negatively charged basic proteins. C. Histones are rich in the basic amino acid residues – lysine and arginine. D. The positively charged DNA is wrapped around the histone octamer to form nucleosome. E. The packaging of chromatin a

Step-by-step solution

Statement A is correct. Histones are organized to form a unit of eight molecules called a histone octamer. Statement B is incorrect. Histones are positively charged, basic proteins, not negatively charged. Statement C is correct. Histones are rich in the basic amino acid residues lysine and arginine, which carry positive charges in their side chains. Statement D is incorrect. DNA is a negatively charged molecule (due to phosphate groups), which is wrapped around the positively charged histone octamer to form a nucl