heterochromatin

views updated May 17 2018

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.

heterochromatin

views updated May 17 2018

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.

heterochromatin

views updated May 23 2018

heterochromatin See chromatin.