What does endosymbiosis mean?
The theory that mitochondria and chloroplasts in eukaryotic cells originated from endosymbiotic bacteria. This theory proposes that these organelles were once free-living bacteria that were engulfed by the cells and eventually evolved into organelles.
Example
"The discovery of endosymbiosis revolutionized our understanding of cellular evolution and the origins of eukaryotic cells."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.