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heterochromosome

[het-er-uh-kroh-muh-sohm]
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noun Genetics.
  1. sex chromosome.

Origin of heterochromosome

First recorded in 1900–05; hetero- + chromosome
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for heterochromosome

Historical Examples

  • Figures 72-74 show the metakinesis of the heterochromosome bivalent.

    Studies in Spermatogenesis

    Nettie Maria Stevens

  • The heterochromosome group is blended into a vacuolated sphere in growth stages (figs. 199, 200).

    Studies in Spermatogenesis

    Nettie Maria Stevens

  • Figure 137 is an exceptional anaphase in which the heterochromosome elements are not mingled with the polar masses of chromatin.

    Studies in Spermatogenesis

    Nettie Maria Stevens

  • Bouquet stage from iron-hæmatoxylin preparations, showing the heterochromosome bivalent (x).

    Studies in Spermatogenesis

    Nettie Maria Stevens

  • Of the insects considered in this paper Aphis and Termopsis have no "accessory chromosome" or "heterochromosome" of any kind.


British Dictionary definitions for heterochromosome

heterochromosome

noun
  1. an atypical chromosome, esp a sex chromosome
  2. a chromosome composed mainly of heterochromatin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

heterochromosome in Medicine

heterochromosome

(hĕt′ə-rō-krōmə-sōm′)
n.
  1. A chromosome composed primarily of heterochromatin.
  2. allosome