The argument that mitochondria and chloroplasts originally were self-sufficient bacteria is supported by the presence of what protein-DNA structure?

Question

Quizplus · Accepted Answer

Nucleoids are protein-DNA structures found in bacteria and prokaryotic organelles, such as mitochondria and chloroplasts. Nucleoids are not typically found in eukaryotic cells. Therefore, the presence of nucleoids in these organelles suggests that they were once free-living bacteria that were engulfed by a larger host cell and evolved to become organelles.

The Argument That Mitochondria and Chloroplasts Originally Were Self-Sufficient Bacteria