| 单词 | tetraploidy |
| 释义 | > as lemmasˈtetraploidy ˈtetraploidy n. the state of being tetraploid. 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 1918 E. B. Babcock & R. E. Clausen Genetics in Relation to Agric. xiv. 263 The doubling of the number of chromosomes typical of the species is known as tetraploidy. 1924 E. W. Macbride Study Heredity (1925) viii. 216 Other examples of such ‘tetraploidy’ (i.e. doubling the ordinary ‘diploid’ number of chromosomes) are known to occur amongst the progeny of hybrids between different species. 1941 Amer. Naturalist 75 321 In many ornamental plants there is a definite need for new types with larger flowers, later blooming habit, and other characteristics usually associated with tetraploidy. 1970 Sci. Jrnl. June 78/3 In lower animal forms both triploidy and tetraploidy are compatible with normal development. < as lemmas |
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