What Is the Strongest Evidence for the Idea That Present-Day

question 21

Multiple Choice

What is the strongest evidence for the idea that present-day eukaryotic aerobes are the descendants of the successful symbiotic association of anaerobes and aerobes?  

• A) Mitochondria can produce ATP.
• B) A mitochondrion can survive indefinitely when removed from a eukaryotic cell.
• C) A mitochondrion has its own set of DNA molecules.
• D) Fossilized mitochondria are older than the oldest fossilized eukaryotes.
• E) All eukaryotic cells have mitochondria.

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