NEET UG 2021 · Zoology · Question 190
NEET 2021 Zoology, question 190
Question 190 of the NEET 2021 paper (code O1) is a Zoology question from Molecular Basis of Inheritance. Its idea, Histone Amino Acid Composition, was asked twice, in 2021 and 2025, across NEET 2017–2026. The NTA final answer key gives option 4.
Updated 2026-10-08
Q190 · Zoology
Which one of the following statements about Histones is wrong ?
- 1Histones are rich in amino acids - Lysine and Arginine.
- 2Histones carry positive charge in the side chain.
- 3Histones are organized to form a unit of 8 molecules.
- 4The pH of histones is slightly acidic.Official answer
Official answer: option 4 · NTA final answer key
Same idea
Histone Amino Acid Composition, in other papers
NEET asked this idea twice, in 2021 and 2025. The other question below.
- 2025 Q146Histones are enriched with -One-line MCQ · Easy
Histone Amino Acid Composition: every question and how it was framed
The chapter
Molecular Basis of Inheritance in ten years of NEET
61 questions from 2017–2026, asked in 10 of 10 papers, about 5.8 a paper. DNA Double Helix alone had 16.