alleryMitochondria and chloroplasts share which of the following features with bacteria?
Athe absence of any DNA
B70S ribosomes and circular DNA
Ca single-layer membrane
Dthe presence of 9+2 axoneme
Answer & Solution
Correct answer: B. 70S ribosomes and circular DNA
Both mitochondria and chloroplasts carry their own circular DNA and have 70S ribosomes — the same as bacteria.
This is the main evidence behind the endosymbiotic theory, which says they were once free-living bacteria engulfed by an ancestral cell.
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