sex chromosome

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sex chromosome

either of the chromosomes determining the sex of animals
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

sex chromosome

[′seks ‚krō·mə‚sōm]
(genetics)
Either member of a pair of chromosomes responsible for sex determination of an organism.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.