Cloning is the process of creating an identical copy of an original. A clone in the biological sense, therefore, is a single cell (like bacteria, lymphocytes etc.) or multi-cellular organism that is genetically identical to another living organism. Sometimes this can refer to "natural" clones made either when an organism reproduces asexually or when two genetically identical individuals are produced by accident (as with identical twins), but in common parlance the clone is an identical copy by some conscious design. Also see clone (genetics). The term clone is derived from κλων, the Greek word for "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.
However, the success rate has been very low: Dolly was born after 276 failed attempts; 70 calves have been created from 9,000 attempts and one third of them died young; Prometea took 328 attempts, and, more recently, Paris Texas was created after 400 attempts. Notably, although the first clones were frogs, no adult cloned frog has yet been produced from a somatic adult nucleus donor cell.
Human cloning is the creation of a genetically identical copy of an existing, or previously existing human or growing cloned tissue from that individual. The term is generally used to refer to artificial human cloning; human clones in the form of identical twins are commonplace, with their cloning occurring during the natural process of reproduction.

external image bTLin.gif
external image bold.gif
external image italic.gif
external image underline.gif
FormatHeading 1Heading 2Heading 3Normal
external image blackdot.gif
external image numbered_list.gif
external image list.gif
external image hr.gif
external image blackdot.gif
external image hyperlink.gif
external image unlink.gif
external image image.gif
external image insert_table.gif
external image special_char.gif
external image bTRin.gif
or Cancel

=Optional: a note about this edit for the page history log===or Cancel

==Images & Files==Double click an image or file to insert it into the page. Show: All Images Only Files Only Page:|1
==Upload New File external image c.gif

External ImagRL

Load an external image, then double click the image to insert it into the page. ||Note that the content you create on is licensed under the Creative Commons Attribution Share-Alike 2.5 License. Please only submit content that you write yourself or that is in the public domain. Learn more about our open content policy.