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cloning
In biology, cloning is the process of producing similar populations of genetically identical individuals that occurs in nature when organisms such as bacteria, insects or plants reproduce asexually. Cloning in biotechnology refers to processes used to create copies of DNA fragments (molecular cloning), cells (cell cloning), or organisms. The term also refers to the production of multiple copies of a product such as digital media or software.
The term clone, invented by J. B. S. Haldane, is derived from the Ancient Greek word κλών ''klōn'', "twig", referring to the process whereby a new plant can be created from a twig. In horticulture, the spelling ''clon'' was used until the twentieth century; the final ''e'' came into use to indicate the vowel is a "long o" instead of a "short o". Since the term entered the popular lexicon in a more general context, the spelling ''clone'' has been used exclusively.
In botany, the term lusus was traditionally used.
==Natural cloning==
Cloning is a natural form of reproduction that has allowed life forms to spread for more than 50 thousand years. It is the reproduction method used by plants, fungi, and bacteria, and is also the way that clonal colonies reproduce themselves.〔(【引用サイトリンク】title=Tasmanian bush could be oldest living organism )〕〔(【引用サイトリンク】title=Ibiza's Monster Marine Plant )〕 Examples of these organisms include Blueberry plants, Hazel trees, Pando trees, the Kentucky coffeetree, Myricas, and the American sweetgum.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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