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  • Posted: 01/28/2005
  • Reviewed: 09/01/2006

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Slide 18


Gene Tests - Three Common Methods

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Gene testing involves examining a person's DNA--typically taken from cells in a sample of blood--for mutations linked to a disease or disorder.

Some genetic tests can identify changes in whole chromosomes. Others examine short stretches of DNA within genes. Yet others look for the protein products of genes.

Gene Tests - Three Common Methods