heterochromosome

American  

[het-er-uh-kroh-muh-sohm] / ˌhɛt ər əˈkroʊ məˌsoʊm /

noun

Genetics.

1. sex chromosome.

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heterochromosome British  

/ ˌhɛtərəʊˈkrəʊməˌsəʊm /

noun

1. an atypical chromosome, esp a sex chromosome

2. a chromosome composed mainly of heterochromatin

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Etymology

Origin of heterochromosome

First recorded in 1900–05; hetero- + chromosome

Example Sentences

The chromosomes in the spermatogonial plates were in most cases much tangled, and the behavior of the heterochromosome pair was such as to suggest an "accessory chromosome" rather than an unequal pair.

From Studies in Spermatogenesis Part II by Stevens, Nettie Maria

As to the second alternative, I see no reason for supposing that the small heterochromosome of a pair is in any different condition, as to activity, from the large one.

From Studies in Spermatogenesis Part II by Stevens, Nettie Maria

Giant spermatocyte, spireme stage, heterochromosome group double the usual size.

From Studies in Spermatogenesis Part II by Stevens, Nettie Maria

First spermatocyte from the same testis, metaphase showing a similar heterochromosome group.

From Studies in Spermatogenesis Part II by Stevens, Nettie Maria

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

From Studies in Spermatogenesis Part II by Stevens, Nettie Maria