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translocation Down syndrome

translocation Down syndrome definition - medical

translocation Down syndrome

noun
A condition in which, as a result of translocation of a large segment of chromosome 21 to another chromosome, an individual has virtually the genetic equivalent of three chromosomes 21 and thus has the phenotype of Down syndrome but with the normal number of chromosomes.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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