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Glossary of Terms

Karyotype
The chromosome profile of a person. In men the karyotype would include 23 pairs (46) regular chromosomes and two sex chromosomes, one X and one Y chromosome. In Down syndrome a male would have a karyotype with 47 regular chromosomes (an extra copy of chromosome 21) and the usual two sex chromosomes.
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Date Last Modified: 08/27/2003 07:19