Which of the following statements are correct with referenc…

Biology NEET Previous Year Question Paper NEET 2026 Previous Year Question Paper Single Correct MCQ

Published on: August 13, 2026

Which of the following statements are correct with reference to packaging of DNA helix?

Histones are organized to form a unit of eight molecules called histone octamer.
B, D and E only

Histones are negatively charged basic proteins.
A, B and D only

Histones are rich in the basic amino acid residues - lysine and arginine.
C, D and E only

The positively charged DNA is wrapped around the histone octamer to form nucleosome.
(E) The packaging of chromatin at higher levels requires an additional set of proteins called non-histone chromosomal proteins.
Choose the correct answer from the options given below:
A, C and E only

Text Solution

Verified by Experts

The correct answer is:

Histones form an eight-molecule unit called a histone octamer.

Histones are positively charged (not negative).

Histones are rich in basic amino acids lysine and arginine.

Negatively charged DNA (not positive) wraps around the histone octamer.

(E) Higher-level packaging requires Non-Histone Chromosomal (NHC) proteins.

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