What is the evidence for the endosymbiotic theory and its significance in the evolution of cells?
Understand the Problem
The question seems to focus on the evolution of cells, specifically discussing ancient single-celled organisms and the endosymbiotic theory that explains the origin of mitochondria and chloroplasts. It asks for more information about these concepts and their implications for the understanding of life's origins.
Answer
Mitochondria and chloroplasts have their own circular DNA like bacteria, supporting endosymbiotic theory.
The endosymbiotic theory is supported by evidence such as mitochondria and chloroplasts containing their own circular DNA, similar to bacteria. This theory explains their evolution from independent prokaryotic organisms into organelles within eukaryotic cells.
Answer for screen readers
The endosymbiotic theory is supported by evidence such as mitochondria and chloroplasts containing their own circular DNA, similar to bacteria. This theory explains their evolution from independent prokaryotic organisms into organelles within eukaryotic cells.
More Information
The theory illustrates a major event in the evolution of life, explaining the emergence of complex cells and enabling the diversity of life seen today.
Tips
A common mistake is assuming all organelles evolved this way; only mitochondria and chloroplasts have strong evidence.
Sources
- The Endosymbiosis Theory & Evolution of Cells - Study.com - study.com
- 7.8: The Endosymbiotic Theory - Biology LibreTexts - bio.libretexts.org
- Evidence for endosymbiosis - Understanding Evolution - evolution.berkeley.edu
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