heteroploidadj.n.
/ˈhɛtərəʊplɔɪd/ Having a chromosome number that is neither the haploid nor the diploid number characteristic of the species; frequently, in restricted sense, = aneuploid adj. and n. (see quot. 1928); also as n., a heteroploid organism.
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the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > ploidy
haploid1906
amphikaryotic1909
polyenergid1911
polyploid1911
triploid1911
tetraploid1914
hexaploid1920
octoploid1921
pentaploid1921
triplex1921
orthoploid1923
aneuploid1924
heteroploid1926
allopolyploid1927
monoploid1928
haplontic1929
hyperdiploid1929
amphidiploid1930
hyperploid1930
hypoploid1930
polysomic1930
mixoploid1931
allotetraploid1932
autopolyploid1934
autotetraploid1935
autoploid1937
polysomatic1937
monosomatic1939
polyploidizing1941
polyploidogenic1944
amphiploid1945
merodiploid1961
pseudodiploid1963
1926 T. H. Morgan Theory Gene xii. 172 In so far as the addition of one or more chromosomes to, or loss from, a given group produces a new number, the word heteroploid has been used.
1926 T. H. Morgan Theory Gene xii. 176 In contrast to these triplo-types of Drosophila there is another heteroploid type..in which one of the small chromosomes is absent.
1926 T. H. Morgan Theory Gene xii. 188 The heteroploids are not so viable as the balanced types from which they arise.
1928 C. A. Jørgensen in Jrnl. Genetics 19 135 The term heteroploid was introduced by Winkler in 1916 to designate..not only the straight numbers 3n, 4n, 5n, etc., but also 2n + 1, 2n + 2, 3n − 1, etc. The heteroploid numbers were divided by Täckholm (1922) into euploid..and aneuploid... I prefer to restrict the term heteroploid to the series n, 3n, 4n, 5n, etc...and to use the term aploid for the irregular numbers.
1934 Nature 3 Nov. 708/2 In the heteroploid series, all having 25 chromosomes, the anatomical differences..were due to the genic constitution of the extra chromosome.
1956 Nature 25 Feb. 384/2 It is of interest to try to find whether the heteroploid cells appear only in certain tissues or if they can arise anywhere in the young embryos.
Derivatives
ˈheteroploidy n. the condition of being heteroploid.
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the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > ploidy
triploidy1916
tetraploidy1918
haploidy1921
hexaploidy1922
polyploidy1922
octoploidy1924
aneuploidy1925
heteroploidy1926
allopolyploidy1927
autopolyploidy1928
hyperdiploidy1929
polysomy1929
hyperploidy1930
hypoploidy1930
mixoploidy1931
syndiploidy1932
allotetraploidy1933
autotetraploidy1935
monoploidy1937
polysomaty1937
ploidy1940
pseudodiploidy1965
polysomatism1967
1926 T. H. Morgan Theory Gene xii. 188 The occurrence of heteroploidy must be regarded as a significant genetic event.
1955 J. B. Hill & H. D. Hill Genetics & Human Heredity xvii. 331 Although rare in animals, heteroploidy occurs frequently in plants.
This entry has not yet been fully updated (first published 1976; most recently modified version published online September 2018).
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adj.n.1926