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isochromosome in Medicine

isochromosome

(ī′sə-krōmə-sōm′)
n.
  1. A chromosomal aberration in which two daughter chromosomes are formed, each lacking one chromosome arm but with the other arm doubled.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.