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Endosymbiotic theory

Biology  Endosymbiosis  Endotherm
04/18/2014

Endosymbiotic theory
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Endosymbiotic theory - This theory states that eukaryote organelles may have evolved when large eukaryotic organisms engulfed but did not digest smaller organisms and a symbiotic relationship arose.

(17) Endosymbiotic theory
(a) The endosymbiotic theory is the idea that mitochondria and chloroplasts both descended from free-living, ancestral bacteria ...

Indeed, the endosymbiotic theory for the origin of organelles sees a form of horizontal gene transfer as a critical step in the evolution of eukaryotes such as fungi, plants, and animals.

According to the endosymbiotic theory, mitochondria might have been the remnants of early bacteria engulfed by ancient eukaryotic cells a billion years ago that might have evolved and become energy-yielding structures within eukaryotic cells at ...

In 1967 she proposed a contentious new hypothesis which became her most important scientific contribution as the endosymbiotic theory of the origin of mitochondria as separate organisms that long ago entered a symbiotic relationship with eukaryotic ...

This endosymbiotic theory of eukaryotic organelles was championed by Lynn Margulis. Originally controversial, this theory is now accepted.

Because of the similarities of their genomes, rickettsias may be the closest relatives to the ancestors of mitochondria.
Link to discussion of the endosymbiotic theory of the origin of mitochondria.

See also: See also: Theory, Bacteria, Organ, Trans, Mitochondria

Biology  Endosymbiosis  Endotherm
04/18/2014

 
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