All of the following are evidence in support of the endosymbiotic origin of mitochondria, except?
A) Mitochondiral genetic codes (codons) are related to each other across phyla, and are distinct from nuclear genetic codes.
B) Mitochondria maintain their own DNA.
C) Transcription in mitochondria is performed by an enzyme similar to bacterial RNA polymerase.
D) Yeast cells can live without mitochondria.
E) Mitochondria have a double membrane.

Question

Quizplus · Accepted Answer

The endosymbiotic theory suggests that mitochondria originated from free-living bacteria that entered into a symbiotic relationship with a host cell. Evidence supporting this includes the presence of their own DNA (B), the similarity of their transcription machinery to bacteria (C), the distinct genetic codes (A), and the double membrane structure (E), which is thought to reflect the engulfment process. Yeast cells cannot live without mitochondria under normal conditions, as mitochondria are essential for aerobic respiration; the statement in D is incorrect in the context of supporting the endosymbiotic origin of mitochondria.

All of the Following Are Evidence in Support of the Endosymbiotic