Binary fission: Difference between revisions

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	'''Binary fission''' is the form of ] and ] used by all ] and some ] organisms. This process results in the reproduction of a living prokaryotic ] by division into two parts which each have the potential to grow to the size of the original cell.

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	] and ] are not the same as binary fission. The ability of some multicellular animals, such as ]s and ]s, to regenerate two whole organisms after having been cut in half, is also not the same as binary fission. Neither is ] of plants.

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	==Process==
	] Binary fission begins with ]. DNA replication starts from an origin of replication, which opens up into a replication bubble (note: prokaryotic DNA replication usually has only 1 origin of replication, whereas eukaryotes have multiple origins of replication). The replication bubble separates the DNA double strand, each strand acts as template for synthesis of a daughter strand by ], until the entire prokaryotic DNA is duplicated.

	After this replicational process, cell growth occurs.

	Each circular ] then attaches to the ]. The cell elongates, causing the two ]s to separate.

	Cell division in bacteria is controlled by the ], a collection of about a dozen ] that collect around the site of division. There, they direct assembly of the division septum. The cell wall and plasma membrane starts growing transversely from near the middle of the dividing cell. This separates the parent cell into two nearly equal daughter cells, each having a nuclear body.<ref name="division septum">{{Citation \| last=Weiss \| first=David S. \| title= Bacterial cell division and the septal ring \| journal=Molecular Microbiology \| volume=54 \| issue=3 \| pages=588-597 \| year=2004 \| doi=10.1111/j.1365-2958.2004.04283.x}}</ref>

	The cell membrane then ] (grows inwards) and splits the cell into two daughter cells, separated by a newly grown cell plate.

	==Use by eukaryotic organelles==
	] ]s such as ], ]s, and ] also reproduce within the eukaryotic cell by binary fission. How they are allotted to one descendant cell or the other during mitosis and cytokinesis is not yet clear.

	==References==
	{{reflist}}

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