Where did mitochondria and chloroplast come from?

chloroplast Mitochondria
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Where did mitochondria and chloroplast come from?

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Mitochondria and chloroplasts both contain their own DNA and are capable of producing some of their own proteins. This suggests that both of these organelles were originally separate micro-organisms, but have become part of eukaryotic cells through symbiosis, and evolution has ensured that they are now vital for cell life due to the many advantages of compartmentalisation over an organelle free structure.

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