What is the primary reason why mitochondria possess circular DNA?

Type: MCQ • Marks: 1

A. It is a remnant of their ancestral endosymbiotic bacterial origin

B. To regulate nuclear genes

C. To produce extra lipids

D. To support cell wall synthesis

Explanation

Endosymbiotic theory posits mitochondria evolved from engulfed aerobic prokaryotes.

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Class 9th Science (MCQ)

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