DNA of mitochondria is__________?
Correct answer: A. circular
- A. circular
- B. spring
- C. straight
- D. All of these
Explanation
Mitochondrial DNA is usually a circular, double-stranded DNA molecule, reflecting the bacterial ancestry proposed by the endosymbiotic theory. Students may choose straight DNA because nuclear chromosomes are generally linear, but mitochondrial DNA is distinct from nuclear DNA in this respect.
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