heterochromatizationn.
/ˌhɛtərəʊˌkrəʊmətʌɪˈzeɪʃən/ Cytology.
A change of state of chromosome material in which it becomes heterochromatic and the action of the genes is modified or suppressed; also, the extent to which such a change has occurred.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > [noun] > changes or actions of genes or chromosomes
repulsion1908
polymery1914
hypostasis1917
inversion1921
polymerism1923
interchange1927
position change1937
heterochromatization1941
read-through1969
1941 Cold Spring Harb. Symp. Quant. Biol. IX. 158/2 When extra heterochromatin..is added to a cell, the heterochromatization..is lessened.
1944 Amer. Naturalist 78 207 Variable ‘heterochromatinization’ takes place not only in salivary gland cells but in other body cells as well.
1948 Jrnl. Genetics 48 80 The process of heterochromatization (heteropycnosis) is reversible.
1957 C. P. Swanson Cytol. & Cytogenetics xiv. 469 This proposes that heterochromatin is formed from euchromatin by a process of genic degeneration... The end point of such an evolutionary trend..would be heterochromatinization of the entire Y.
1969 Nature 16 Aug. 683/2 The X chromosome that forms the sex-chromatin mass of normal females..is clearly heterochromatic when it forms (by facultative heterochromatization) a distinct chromocentre in the interphase nucleus.
Derivatives
ˌheteroˈchromatized adj. (also ˌheteroˈchromatinized)
ΚΠ
1941 Cold Spring Harb. Symp. Quant. Biol. IX. 158/2 The euchromatic regions which have been transferred into the vicinity of heterochromatic ones are themselves partly..‘heterochromatized’.
1948 Jrnl. Genetics 48 83 The active section is sometimes so highly heterochromatized that it becomes quite indistinguishable from the neighbouring inert region.
1964 Science 10 July 130/1 Tissue..in which the heterochromatized X is of paternal origin.
This entry has not yet been fully updated (first published 1976; most recently modified version published online December 2020).
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n.1941