Navigation Links
Symbiogenesis


Symbiogenesis refers to the merging of two separate organisms to form a single new organism. The idea originated with Konstantin Mereschkowsky in his 1926 book Symbiogenesis and the Origin of Species, who proposed that chloroplasts originated from cyanobacteria captured by a protozoan. Today both chloroplasts and mitochondria are believed to have such an origin; see endosymbiotic hypothesis.

In Acquiring Genomes: A Theory of the Origins of Species, Lynn Margulis argued that symbiogenesis was the primary force in evolution. According to her theory, acquisition and accumulation of random mutations are not sufficient to explain how inherited variations occur, and new organelles, bodies, organs, and species arise from symbiogenesis. Whereas Darwin emphasized competition as the main force behind evolution, Margulis emphasizes cooperation.

However, this idea has little support from other evolutionary biologists. While symbiogenesis has had a major impact on eukaryotic life, little of its diversification can be attributed to it. For instance, the origin of mitochondria made the development of animals possible, but there is no indication of other symbiogeneses that separated the different phyla.


'"/>


(Date:11/13/2018)... ... November 13, 2018 , ... ... clinical trial site service companies in North America, announces a new partnership ... and a leading provider of innovative, quality, comprehensive musculoskeletal care. This new ...
(Date:11/9/2018)... ... November 08, 2018 , ... Boekel Scientific launches a new ... as dry bath incubators are used in laboratories worldwide for controlling and maintaining ... new heating blocks, Boekel Scientific used the same interface design as their recently ...
(Date:11/7/2018)... Mass. (PRWEB) , ... November 07, 2018 , ... ... special requests, and the flexibility to adjust to last-minute changes all contribute to ... Colpitts Clinical. The clinical trial patient travel and expense services provider says 80 ...
Breaking Biology News(10 mins):
Other biology definition