出典:Wiktionary
出典:『Wiktionary』 (2010/09/27 09:45 UTC 版)
copy number variation (複数形 copy number variations) (Abbreviated as: CNV)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/29 10:42 UTC 版)
Copy-number variations (CNVs)—a form of structural variation—are alterations of the DNA of a genome that results in the cell having an abnormal number of copies of one or more sections of the DNA. CNVs correspond to relatively large regions of the genome that have been deleted (fewer than the normal number) or duplicated (more than the normal number) on certain chromosomes. For example, the chromosome that normally has sections in order as A-B-C-D might instead have sections A-B-C-C-D (a duplication of "C") or A-B-D (a deletion of "C").