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Definition of Copy number polymorphism

Copy number polymorphism: Abbreviated CNP. A normal variation in DNA due to variation in the number of copies of a sequence within the DNA. Large-scale copy number polymorphisms are common and widely distributed in the human genome.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=34373
Last Editorial Review: 9/20/2012

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