By Justin Petrone

Researchers at the University of Washington in Seattle have developed a new microarray that they claim can be used to look at copy number polymorphisms in human populations.

Copy number polymorphisms, or CNPs, are copy number variants that are present at a high frequency in humans — generally more than 1 percent of the population. CNPs are enriched in segmentally duplicated regions of the genome, often for immune and environmental response functions.

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