octoploidyn.

Brit.

/ˈɒktəplɔɪdi/, U.S.

/ˈɑktəˌplɔɪdi/

Forms: 1900s– octaploidy, 1900s– octoploidy.

Origin: Formed within English, by derivation. Etymons: octoploid adj., -y suffix³.

Etymology: < octoploid adj. + -y suffix³, after diploidy n. at diploid n. and adj. Derivatives, tetraploidy n. at tetraploid adj. Derivatives, hexaploidy n. at hexaploid adj. and n. Derivatives, etc.On the form in octa- see discussion s.v. octa- comb. form.

Biology.

The state or condition of being octoploid.

ΘΚΠ

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

1924 Amer. Naturalist 58 309 Additional reason for assuming octaploidy in the case of C[repis] biennis is found in its comparatively large size and vigorous growth.

1929 Bot. Gaz. 87 617 Lactuca and Crepis are complicated by the presence of several series of haploid numbers, but the former reaches a variety which is certainly hexaploid.., and the latter attains octoploidy.

1948 Jrnl. Heredity 39 42/1 Instead of abrupt doublings of the chromosome number as in mitosis, there is therefore a gradual change from diploidy to tetraploidy, from tetraploidy to octoploidy and so on.

1983 E. C. Minkoff Evolutionary Biol. xv. 260/2 Even levels of polyploidy, such as tetraploidy, hexaploidy, and octaploidy, are far more frequent than odd levels such as triploidy and pentaploidy.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	octoploidy
释义	octoploidyn. Brit. /ˈɒktəplɔɪdi/, U.S. /ˈɑktəˌplɔɪdi/ Forms: 1900s– octaploidy, 1900s– octoploidy. Origin: Formed within English, by derivation. Etymons: octoploid adj., -y suffix³. Etymology: < octoploid adj. + -y suffix³, after diploidy n. at diploid n. and adj. Derivatives, tetraploidy n. at tetraploid adj. Derivatives, hexaploidy n. at hexaploid adj. and n. Derivatives, etc.On the form in octa- see discussion s.v. octa- comb. form. Biology. The state or condition of being octoploid. ΘΚΠ 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 1924 Amer. Naturalist 58 309 Additional reason for assuming octaploidy in the case of C[repis] biennis is found in its comparatively large size and vigorous growth. 1929 Bot. Gaz. 87 617 Lactuca and Crepis are complicated by the presence of several series of haploid numbers, but the former reaches a variety which is certainly hexaploid.., and the latter attains octoploidy. 1948 Jrnl. Heredity 39 42/1 Instead of abrupt doublings of the chromosome number as in mitosis, there is therefore a gradual change from diploidy to tetraploidy, from tetraploidy to octoploidy and so on. 1983 E. C. Minkoff Evolutionary Biol. xv. 260/2 Even levels of polyploidy, such as tetraploidy, hexaploidy, and octaploidy, are far more frequent than odd levels such as triploidy and pentaploidy. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.1924
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