单词 | autotetraploid |
释义 | autotetraploidn.adj. Biology. A. n. A tetraploid organism in which the four sets of chromosomes are produced by the duplication of the chromosomes of a single diploid species. 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 1930 J. B. S. Haldane in Jrnl. Genetics 22 363 The self-sterile Dahlia variabilis behaves in some respects at least as an autotetraploid. 1949 C. D. Darlington & K. Mather Elements of Genetics vi. 135 The allotetraploid stands at one extreme; the autotetraploid, the product of doubling a homozygous diploid such as a tomato, stands at the other. 1983 E. C. Minkoff Evolutionary Biol. xv. 261/1 Autopolyploids have been produced artificially in many species of domestic plants, usually as autotetraploids. 2000 R. Ennos & E. Sheffield Plant Life i. 14/2 Most autotetraploids are infertile and rely on asexual reproduction to survive. The best known example is probably the cultivated potato Solanum tuberosum. B. adj. Of an organism or population: characterized by autotetraploidy. 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 1935 Bot. Rev. 1 482 Nishimaya suggests doubling of chromosomes after fertilization as the origin of several autotetraploid plants. 1964 Arkansas Farm Res. May–June 8/1 Several autotetraploid lines have been obtained through the use of colchicine. 2002 R. Frankham et al. Introd. Conservation Genetics x. 238 Autotetraploid populations of the grassland daisy have greater polymorphism and allelic diversity than related diploid populations. This entry has been updated (OED Third Edition, June 2011; most recently modified version published online December 2021). < |
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