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Can you believe that eukaryotic cells evolved by porkaryotic cells engulfing one another?!
In this video, I discuss what defines a eukaryotic cell, the process that led to the evolution of eukaryotic cells, which is called endosymbiosis, the reason that ancient prokaryotes began this endosymbiosis process, the tranfer of genes between the engulfed and host cell, the advantages that led to the two cells becoming interdependent and eventually a single organism, the similarities between bacterial cells and organelles in eukaryotic cells (such as cyanobacteria & chloroplasts and anaerobic bacteria & mitochondria), the competiing hypotheses regarding whether the eurkaryotic nucleus or mitochondria evolved first, when eukaryotes evolved in Earth's history, and why eukaryotes waiting so long to become large and complex multicellular organisms.
References: Geomicrobiology: amzn.to/2WAloTR
Earth System History: amzn.to/3v1Iy0G
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0:00 What Defines Eukaryotes?
2:05 Endosymbiosis
3:20 Why & How Endosymbiosis Happened?
6:29 Evidence for Mitochondria & Chloroplast Origins
8:53 Nucleus or Mitochondria First?
9:58 When Eukaryotes Evolved
11:20 Why Low Diversity Until ~600 Ma?
14:08 Why High Diversity After ~600 Ma?
16:55 Related Videos & References
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