Chloroplasts and mitochondria have relatively small,circular chromosomes.This observation is evidence which supports the endosymbiotic theory,proposing that chloroplasts and mitochondria arose from which of the following?

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The small, circular chromosomes found in chloroplasts and mitochondria are similar to those of bacteria. This supports the endosymbiotic theory, which proposes that these organelles arose from free-living bacteria that were engulfed by an ancestral eukaryotic cell.

Chloroplasts and Mitochondria Have Relatively Small,circular Chromosomes