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Glossary Term
Glossary Term Trisomy
Definition The condition of having three chromosomes of a particular type. Down Syndrome in humans is a trisomy for chromosome 21.
See also Monosomy.

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Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Tumor Biology (MTB), Gene Ontology (GO), MouseCyc
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MGI 6.13
The Jackson Laboratory