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heterochromatin

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

noun

, Genetics.
  1. the dense, highly stainable part of a chromosome.

heterochromatin

/ ˌhɛtərəʊˈkrəʊmətɪn /

noun

  1. the condensed part of a chromosome that stains strongly with basic dyes in nondividing cells and has little genetic activity Compare euchromatin

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Word History and Origins

Origin of heterochromatin1

First recorded in 1930–35; hetero- + chromatin

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heterochromaticheterochrome

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