A microscopic organism is found to have double-stranded, circular DNA that is not associated with basic proteins such as histones. Which of the following structural features is expected to be present in this organism?

Step-by-step solution

The presence of double-stranded, circular DNA without histone proteins (naked DNA) is a characteristic feature of prokaryotic cells. Prokaryotic cells lack a well-defined nucleus and membrane-bound organelles such as mitochondria. They exclusively possess 70S ribosomes in their cytoplasm, whereas eukaryotic cells have 80S ribosomes in their cytoplasm. Answer: Presence of 70S ribosomes in the cytoplasm