heteropycnosisn.

/ˌhɛtərəʊpɪkˈnəʊsɪs/

Forms: Also heteropyknosis.

Etymology: < German heteropyknose (S. Gutherz 1907, in Arch. f. mikrosk. Anat. LXIX. 495), < hetero- comb. form + Greek πυκνός thick, dense: see -osis suffix.

Cytology.

The persistence of greater than average staining in chromosomal material; the character or condition, exhibited by some chromosomes or chromosomal regions in any particular nucleus, of being more (or, for negative heteropycnosis, less) condensed and hence appearing to take up more (or, less) stain than do the majority of chromosomes or chromosomal regions.

ΘΚΠ

the world > life > biology > substance > staining quality of substance > [noun]

metachromatism1893

metachromasia1896

polychromatophilia1897

metachromasy1903

sudanophilia1907

polychromasia1909

acidophilia1913

heteropycnosis1925

fuchsinophilia1940

basophilia1946

isopycnosis1950

the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > staining of chromosome

heteropycnosis1925

isopycnosis1950

1925 E. B. Wilson Cell (ed. 3) x. 759 In the greater number of cases heteropycnosis first takes place after the final spermatogonial division.

1952 G. H. Bourne Cytol. & Cell Physiol. (ed. 2) v. 195 This property of heteropycnosis is especially characteristic of sex-chromosomes, such as the Y-chromosome of Drosophila species and the X-chromosomes of grasshoppers, but is also shown by many autosomal chromosome regions, and sometimes by whole autosomes.

1962 Lancet 19 May 1075/1 Once isopyknosis or heteropyknosis of a given X chromosome has been established, it is irreversible.

1963 K. R. Lewis & B. John Chromosome Marker i. i. 18 This positive heteropycnosis is later reversed and by metaphase-I the X has become negatively heteropycnotic and stains faintly.

Derivatives

heteropycˈnotic adj.

ΘΚΠ

the world > life > biology > substance > staining quality of substance > [adjective]

basophil1890

neutrophil1890

neutrophilic1893

oxyphil1893

oxyphilous1893

basophilic1894

basophilous1894

metachromatic1894

polychromatophilic1897

polychromatophil1898

chromophil1899

chromophilic1899

chromophobic1899

orthochromatic1899

polychromatic1899

pycnomorphous1899

fuchsinophil1900

neutrophilous1900

carminophilous1901

chromatoid1901

oxyphilic1901

pyknotic1902

sudanophil1902

chromaffin1903

metachromic1908

chromophobe1909

phaeochrome1909

sudanophilic1909

trachychromatic1909

polychromasic1911

chromaffinic1913

osmiophilic1923

osmophile1923

Feulgen-negative1928

fuchsinophilic1931

heteropycnotic1934

osmophilic1936

isopycnotic1950

Feulgen-positive1954

the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > staining of chromosome

pyknotic1902

heteropycnotic1934

isopycnotic1950

1934 Genetics 19 467 In the latter species [sc. Drosophila melanogaster] he finds that about half of the X chromosome is heteropycnotic in the interphase.

1968 H. Harris Nucleus & Cytoplasm iv. 75 It is probable that other highly condensed heterochromatic or heteropyknotic regions in interphase nuclei also synthesize very much less RNA than the euchromatic regions.

This entry has not yet been fully updated (first published 1976; most recently modified version published online December 2020).

单词	heteropycnosis
释义	heteropycnosisn. /ˌhɛtərəʊpɪkˈnəʊsɪs/ Forms: Also heteropyknosis. Etymology: < German heteropyknose (S. Gutherz 1907, in Arch. f. mikrosk. Anat. LXIX. 495), < hetero- comb. form + Greek πυκνός thick, dense: see -osis suffix. Cytology. The persistence of greater than average staining in chromosomal material; the character or condition, exhibited by some chromosomes or chromosomal regions in any particular nucleus, of being more (or, for negative heteropycnosis, less) condensed and hence appearing to take up more (or, less) stain than do the majority of chromosomes or chromosomal regions. ΘΚΠ the world > life > biology > substance > staining quality of substance > [noun] metachromatism1893 metachromasia1896 polychromatophilia1897 metachromasy1903 sudanophilia1907 polychromasia1909 acidophilia1913 heteropycnosis1925 fuchsinophilia1940 basophilia1946 isopycnosis1950 the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > staining of chromosome heteropycnosis1925 isopycnosis1950 1925 E. B. Wilson Cell (ed. 3) x. 759 In the greater number of cases heteropycnosis first takes place after the final spermatogonial division. 1952 G. H. Bourne Cytol. & Cell Physiol. (ed. 2) v. 195 This property of heteropycnosis is especially characteristic of sex-chromosomes, such as the Y-chromosome of Drosophila species and the X-chromosomes of grasshoppers, but is also shown by many autosomal chromosome regions, and sometimes by whole autosomes. 1962 Lancet 19 May 1075/1 Once isopyknosis or heteropyknosis of a given X chromosome has been established, it is irreversible. 1963 K. R. Lewis & B. John Chromosome Marker i. i. 18 This positive heteropycnosis is later reversed and by metaphase-I the X has become negatively heteropycnotic and stains faintly. Derivatives heteropycˈnotic adj. ΘΚΠ the world > life > biology > substance > staining quality of substance > [adjective] basophil1890 neutrophil1890 neutrophilic1893 oxyphil1893 oxyphilous1893 basophilic1894 basophilous1894 metachromatic1894 polychromatophilic1897 polychromatophil1898 chromophil1899 chromophilic1899 chromophobic1899 orthochromatic1899 polychromatic1899 pycnomorphous1899 fuchsinophil1900 neutrophilous1900 carminophilous1901 chromatoid1901 oxyphilic1901 pyknotic1902 sudanophil1902 chromaffin1903 metachromic1908 chromophobe1909 phaeochrome1909 sudanophilic1909 trachychromatic1909 polychromasic1911 chromaffinic1913 osmiophilic1923 osmophile1923 Feulgen-negative1928 fuchsinophilic1931 heteropycnotic1934 osmophilic1936 isopycnotic1950 Feulgen-positive1954 the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > staining of chromosome pyknotic1902 heteropycnotic1934 isopycnotic1950 1934 Genetics 19 467 In the latter species [sc. Drosophila melanogaster] he finds that about half of the X chromosome is heteropycnotic in the interphase. 1968 H. Harris Nucleus & Cytoplasm iv. 75 It is probable that other highly condensed heterochromatic or heteropyknotic regions in interphase nuclei also synthesize very much less RNA than the euchromatic regions. This entry has not yet been fully updated (first published 1976; most recently modified version published online December 2020). < n.1925
随便看	phelloderms phellogen philanthropized philanthropizes philanthropizing philanthropoid philanthropoidal philanthropoidally philanthropoids philanthropos philanthropy philarabian philarabic philarchaist philargyrist philargyrous philargyry philaristocracy philatelic philatelical philatelically philatelies philatelism philatelist philatelistic