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Glossary

Deletion - Glossary Entry

Definition(s)

Absence of a segment of DNA; may be as small as a single base or large enough to encompass one or more entire genes. Large deletions involving a whole segment of a chromosome may be detected by routine examination of the chromosomes; intermediate deletions involving a few genes may be detected by using fluorescent in situ hybridization (FISH); smaller deletions involving a portion of a gene may only be detected by analyzing the DNA.

Definition from: GeneTestsThis link leads to a site outside Genetics Home Reference. from the University of Washington and Children's Health System, Seattle

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Published: October 8, 2004
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