endosymbiont hypothesis

endosymbiont hypothesis
The hypothesis that semi-autonomous organelles such as mitochondria and chloroplasts were originally endosymbiotic bacteria or cyanobacteria. The arguments are convincing and although the hypothesis cannot be proven it is widely accepted.

Dictionary of molecular biology. 2004.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • CoRR hypothesis — The CoRR hypothesis states that the location of genetic information in cytoplasmic organelles permits regulation of its expression by the reduction oxidation ( redox ) state of its gene products. CoRR is short for Co location for Redox Regulation …   Wikipedia

  • Hydrogen hypothesis — The hydrogen hypothesis is a model proposed by William Martin and Miklós Müller in 1998 that describes a possible way in which the mitochondrion arose as an endosymbiont within a prokaryote (an archaebacterium), giving rise to a symbiotic… …   Wikipedia

  • Horizontal gene transfer — (HGT), also Lateral gene transfer (LGT), is any process in which an organism incorporates genetic material from another organism without being the offspring of that organism. By contrast, vertical transfer occurs when an organism receives genetic …   Wikipedia

  • cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… …   Universalium

  • Ford Doolittle — Dr. W. Ford Doolittle (born 1942 in Urbana, Illinois) is a biochemist. As of 2005, he is a professor at Dalhousie University in Halifax, Nova Scotia. He received his BA in Biochemical Sciences from Harvard University in 1963 and his PhD from… …   Wikipedia

  • Inner mitochondrial membrane — Mitochondria structure: (1) inner membrane, (2) outer membrane, (3)cristae, (4) matrix The mitochondrial inner membrane forms internal compartments known as cristae, which allow greater space for the proteins such as cytochromes to function… …   Wikipedia

  • chloroplast — Photosynthetic organelle of higher plants. Lens shaped and rather variable in size but approximately 5µm long. Surrounded by a double membrane and contains circular DNA (though not enough to code for all proteins in the chloroplast). Like the… …   Dictionary of molecular biology

  • Cyanobacteria — (= Cyanophyta) Modern term for the blue green algae, prokaryotic cells that use chlorophyll on intracytoplasmic membranes for photosynthesis. The blue green colour is due to the presence of phycobilins. Found as single cells, colonies or simple… …   Dictionary of molecular biology

  • endosymbiotic bacteria — Bacteria that establish a symbiotic relationship within a eukaryotic cell. Eg. the nitrogen fixing bacteria of legume root nodules. See also endosymbiont hypothesis …   Dictionary of molecular biology

  • intermembrane space — Region between the two membranes of mitochondria and chloroplasts. On the endosymbiont hypothesis, this space would represent the original phagosome …   Dictionary of molecular biology

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”