Which of the following is not an example of evidence supporting the "endosymbiotic theory"?

Explanation

OPTION A: Mitochondria and other plastids (such as chloroplasts) multiplying by binary fission is a key piece of evidence supporting the endosymbiont theory. Binary fission is the process by which these organelles replicate themselves, similar to how bacteria reproduce.OPTION B: Mitochondria do contain their DNA, which is a circular chromosome. This is another important piece of evidence for the endosymbiont theory. The presence of DNA in mitochondria supports the idea that they were once free-living bacteria that were engulfed by ancestral eukaryotic cells. OPTION C: Mitochondria do have their own ribosomes, which are smaller and structurally different from the ribosomes found in the cytoplasm of eukaryotic cells. These mitochondrial ribosomes are known as 70S ribosomes and resemble bacterial ribosomes. This is yet another piece of evidence supporting the endosymbiont theory. OPTION D: Therefore, all of the provided options are examples of evidence supporting the endosymbiont theory Hence, D is the correct option.