heterochromosome

[het-er-uh-kroh-muh-sohm]

noun

Genetics.

1. sex chromosome.

heterochromosome

/ ˌhɛtərəʊˈkrəʊməˌsəʊm /

noun

1. an atypical chromosome, esp a sex chromosome

2. a chromosome composed mainly of heterochromatin

Word History and Origins

Origin of heterochromosome¹

First recorded in 1900–05; hetero- + chromosome

Example Sentences

In figures 113-116 the small heterochromosome pair is shown in various positions with reference to the other chromosomes of the metaphase of the first spermatocyte.

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

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The small heterochromosome divides in the second spindle in advance of the others as seen in figure 150.

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First spermatocyte, growth stage showing the heterochromosome group.

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First spermatocyte, spireme stage, showing the larger and smaller heterochromosome associated with a plasmosome. 65-68.

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