Which of the following is suggestive that mitochondria may have been an ancient entity?
A) Mitochondria produce energy
B) Some exceptions to the genetic code are found in mitochondrial DNA.
C) Mitochondrial DNA is passed only through the female line.
D) None of the above is correct.

Question

Quizplus · Accepted Answer

The presence of exceptions to the universal genetic code in mitochondrial DNA suggests that mitochondria may have originated from an ancient, separate lineage before becoming integrated into eukaryotic cells.

Which of the Following Is Suggestive That Mitochondria May Have