Which of the following nucleic acids is present in an organism having 70S ribosome only?

Single stranded DNA with protein coat

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Double stranded circular naked DNA

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Double stranded DNA enclosed in nuclear membrane

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Double stranded circular DNA with histone proteins

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Solution

The correct option is B Double stranded circular naked DNA
Prokaryotic organisms like bacteria have only 70S ribosomes. Such organisms have double stranded circular naked DNA in the cytoplasm, not enclosed by nuclear membrane because they lack nucleus.

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