单词 | autopolyploid |
释义 | autopolyploidn.adj. Biology. A. n. A polyploid organism in which all sets of chromosomes are derived from duplications of a single ancestral genome. ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > ploidy > individual haploid1908 tetraploid1914 haplont1918 hexaploid1921 pentaploid1921 pseudotetraploid1923 octoploid1926 triploid1927 allopolyploid1928 autopolyploid1928 polyploid1928 hyperdiploid1929 allotetraploid1930 autotetraploid1930 hyperploid1930 hypoploid1930 autoploid1932 polysomic1933 mixoploid1939 monoploid1944 amphiploid1945 merozygote1956 merodiploid1964 1928 C. D. Darlington in Jrnl. Genetics 19 243 It is impossible to draw any but an arbitrary line across the innumerable gradations between a pure type, as pure as inbreeding can produce, and a hybrid;..it is thus impossible to distinguish in absolute terms between an allo-polyploid and an auto-polyploid. 1970 Taxon 19 155 Autopolyploids are under even more serious genetic disadvantages. Multivalent formation leads to partial sexual sterility. 2007 T. A. Brown Genomes 3 xviii. 576 (caption) Autopolyploids cannot interbreed successfully with their parents. B. adj. Of an organism or population: characterized by autopolyploidy. ΘΚΠ 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 1934 Science 21 Sept. 269/1 These new findings indicate that the cultivated American cottons are of allopolyploid rather than of autopolyploid nature. 1959 J. B. S. Haldane in P. R. Bell Darwin's biological work iii. 134 Autopolyploid races reproducing parthenogenetically are not very rare in insects. 2005 Evolution 59 1867/1 Autopolyploid plants were once considered extremely rare in nature. This entry has been updated (OED Third Edition, June 2011; most recently modified version published online December 2021). < n.adj.1928 |
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