Question

The prokaryotic genetic system contains [NCERT 1976]
A) DNA and histones
B) Either DNA or histones
C) DNA but no histones
D) Neither DNA nor histones

Answer 1

Question :

The prokaryotic genetic system contains -

A) DNA and histones

B) Either DNA or histones

C) DNA but no histones  ✓

D) Neither DNA nor histones

Explanation:

Prokaryotes are unicellular organisms without membrane-bound organelles. They lack a true nucleus. Instead, they have nucleoid, a genetic material without the nuclear envelope. In prokaryotes, the genetic material is single circular double-stranded DNA without histones.  

Thus, the correct answer is 'DNA but no histone.'

Answer 2

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The prokaryotic genetic system contains -

A) DNA and histones

B) Either DNA or histones

C) DNA but no histones  ✅✔✅.

D) Neither DNA nor histones

__________________________

Explanation :

→ The nucleus or genetic material is absent in prokaryotes .Nucleus contain nuclear material called as nucleolus or nucleic acid.

→  In prokaryotes, the genetic material is single circular double-stranded DNA without histones.  

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