Aule
11-20-2005, 09:22 AM
Endosymbiosis and The Origin of Eukaryotes
The endosymbiosis theory postulates that
-The mitochondria of eukaryotes evolved from aerobic bacteria (probably related to the rickettsias) living within their host cell.
-The chloroplasts of eukaryotes evolved from endosymbiotic cyanobacteria (autotrophic prokaryotes).
-Eukaryotic cilia and flagella may have arisen from endosymbiotic spirochetes. -The basal bodies from which eukaryotic cilia and flagella develop would have been able to create the mitotic spindle and thus made mitosis possible.
More (http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Endosymbiosis.html)
The endosymbiosis theory postulates that
-The mitochondria of eukaryotes evolved from aerobic bacteria (probably related to the rickettsias) living within their host cell.
-The chloroplasts of eukaryotes evolved from endosymbiotic cyanobacteria (autotrophic prokaryotes).
-Eukaryotic cilia and flagella may have arisen from endosymbiotic spirochetes. -The basal bodies from which eukaryotic cilia and flagella develop would have been able to create the mitotic spindle and thus made mitosis possible.
More (http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Endosymbiosis.html)