D.N.A of bacterium is:
Correct answer: C. Haploid, double stranded, coiled
- A. Haploid, single stranded, coiled
- B. Diploid, double stranded, coiled
- C. Haploid, double stranded, coiled
- D. Diploid, single stranded, coiled
Explanation
Bacterial DNA is characterized by being a single, circular, double stranded molecule that is tightly coiled to fit within the cell. This DNA forms the bacterial chromosome, and because bacteria have only one chromosome, they are haploid. Option C is correct because it accurately describes the nature of bacterial DNA. Option A is incorrect as bacterial DNA is not single stranded. Option B is incorrect because bacteria are not diploid; they only have one chromosome. Option D is incorrect as bacterial DNA is not single stranded and bacteria are not diploid.
This question appeared on the ETEA MDCAT 2016 paper, which you can sit online with every answer explained.
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