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单词 isopycnosis
释义

isopycnosisn.

/ˌʌɪsəʊpɪkˈnəʊsɪs/
Forms: Also isopyknosis.
Etymology: < iso- comb. form + -pycnosis (in heteropycnosis n.).
Cytology.
The character or condition of having such a degree of condensation and staining as is typical of the majority of chromosomes or chromosomal regions within a particular nucleus.
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
1950 G. Östergren in Hereditas XXXVI. 511 Heteropycnosis is a term in current use in chromosome studies... It might be useful to have a term for the opposite effect to that called heteropycnosis. Since such a term might actually have a function to fulfil, I suggest that the term isopycnosis be introduced.
1962 Lancet 29 Dec. 1384/1 In female meiosis the two X chromosomes may show complete or partial isopyknosis according to the type of pairing.

Derivatives

ˌisopycˈnotic 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
1950 G. Östergren in Hereditas XXXVI. 512 That a chromosome region is isopycnotic should then mean simply that it does not differ from the majority of the chromosome regions of the cell in its appearance.
1967 U. Mittwoch Sex Chromosomes xii. 242 Both X-chromosomes of the female become isopycnotic [during gametogenesis].
This entry has not yet been fully updated (first published 1976; most recently modified version published online December 2020).
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n.1950
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