BioScience Dictionary

 
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Found Endosymbiosis 3 times.

Displaying results 1 to 10.

1. Endosymbiosis
A symbiotic relationship between two organism s in which one of the two organisms (the endosymbiont ) lives inside the body of the other one (the host ). Compare ectosymbiosis .

2. Endosymbiosis theory
The scientific theory that the organelle s of eukaryotic cell s arose when free-living procaryotic cells began living within other, larger free-living procaryotic cells and formed mutualistic symbiotic relationships with them.

3. Endosymbiosis
Theory that attempts to explain the origin of the DNA-containing mitochondria and chloroplasts in early eukaryotes by the engulfing of various types of bacteria that were not digested but became permanent additions to the ancestral "eukaryote".