<p><strong>SF Fig. 2.4.</strong> The process of serial endosymbiosis is explained in the diagram above. Mitochondria and chloroplasts were likely created when a eukaryotic cell engulfed smaller, prokaryotic cell, which then became an organelle.</p>

SF Fig. 2.4. The process of serial endosymbiosis is explained in the diagram above. Mitochondria and chloroplasts were likely created when a eukaryotic cell engulfed smaller, prokaryotic cell, which then became an organelle.

Image courtesy of Kelvinsong, Wikimedia Commons