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Facultative heterochromatin: Chromosome material that can be either heterochromatin or euchromatin.
The inactive X chromosome is made up of facultative heterochromatin. When a woman transmits that X chromosome to a son, the chromosome reverts to the euchromatic state and to genetic activity.
These varieties lie on a continuum between the two extremes of constitutive and facultative heterochromatin. Both play a role in the expression of genes, where ...
Facultative heterochromatin: Chromosome material that can be either heterochromatin or euchromatin. The inactive X chromosome is made up of facultative heterochromatin.
Chromosomal material that may alternate in form and function between euchromatin and heterochromatin.
Heterochromatin is defined classically by condensation throughout the cell cycle, replication in late S phase and gene inactivity. Facultative heterochromatin is of ...
Facultative heterochromatin has the faculty to return to the normal euchromatic state. The inactive X chromosome is made up of facultative heterochromatin.