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Question

Biology Question on kingdom monera

The DNA of E.coli is

A

double stranded and linear

B

double stranded and circular

C

single stranded and linear

D

single stranded and circular.

Answer

double stranded and circular

Explanation

Solution

E. coli is a gram-negative, rod-shaped, motile or nonmotile bacteria.

  • It contains double-stranded DNA.
  • The DNA in E.Coli is not associated with any histone proteins, hence it is known as naked DNA.
  • This DNA has no free ends and is circular.

Therefore, option B) is the correct answer.