What did Margulis' endosymbiotic theory help explain?
Origin of eukaryotic cells
Origin of viruses
Origin of prokaryotic cells
Origin of fungi
Answer
Margulis' endosymbiotic theory proposed that eukaryotic cells evolved from a symbiotic relationship between prokaryotic cells. This theory helped explain the origin of eukaryotic cells, which are more complex than prokaryotic cells and have membrane-bound organelles such as mitochondria and chloroplasts. Theory suggests that these organelles were once free-living prokaryotes that were engulfed by a larger prokaryotic cell and eventually became dependent on the host cell for survival.
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