Which of the following is evidence that mitochondria may have at one time been independently living bacteria?
A) Mitochondria can live and reproduce outside cells in the laboratory.
B) The sequence of mitochondrial DNA is very similar to that of bacterial DNA.
C) Bacteria, like mitochondria, have internal membranes.
D) Mitochondria can produce their own food.

Question

Quizplus · Accepted Answer

The sequence of mitochondrial DNA is very similar to that of bacterial DNA, supporting the endosymbiotic theory that mitochondria were once free-living bacteria that entered into a symbiotic relationship with eukaryotic cells.

Which of the Following Is Evidence That Mitochondria May Have