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Question and Answer

What is true about genetic material of a prokaryotic cell ?
(A) Lacks histones
(B) Not enceloped by nuclear membrane
(C) Composed of a single circular DNA molecule
(D) All of these

Answer

Answer: D
In prokaryotes, the genetic material consists ofd single circular DNA molecule lying entanglend in nucleoid. It is not bounded by a definite nuclear membrane. Histones are water-solble proteins rich in arginine and lysine that help in DNA packaging in chromosomes. Prokaryotic cells lack histone proteins.
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