Heterochromatin

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heterochromatin The chromosome material that accepts stains in the interphase nucleus (unlike euchromatin). Such regions, particularly those containing the centromeric and nucleolus organizers, may adhere to form a chromocentre. Some chromosomes are composed primarily of heterochromatin: these are termed heterochromosomes. In many species, the Y chromosome is a heterochromosome.

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heterochromatin Chromosome material that accepts stains in the interphase nucleus (unlike euchromatin). Such regions, particularly those containing the centromeric and nucleolus organizers, may adhere to form a chromocentre. Some chromosomes are composed primarily of heterochromatin: these are termed heterochromosomes. In many species, the Y-chromosome is a heterochromosome.

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heterochromatin See chromatin.