| 单词 |
dauermodification |
| 释义 |
dauermodification Genetics.|ˈdaʊəmɒdɪfɪˈkeɪʃən|
Also ‖ Dauer-, dauermodifikation (pl. -en).
[ad. G. dauermodifikation (V. Jollos 1913, in Biol. Centralbl. XXXIII. 233), f. dauer duration + modifikation modification.]
A character, usu. one artificially induced in an organism, which is inherited through the cytoplasm and tends to disappear after a few generations.
1938Genetica XX. 126 A transitory change of the plasmatic nature in a basal part of the original individual, which change is not a common modification, neither a plasmatic mutation, because it is inherited in some degree for a few generations, but it disappears in succeeding generations..it may be classified as a case of ‘Dauermodifikation’ (permanent modifications). 1943Hereditas XXIX. 424 The so-called dauermodifications..are inherited for some time and then disappear. 1944Nature 5 Aug. 167/1 The carcinogens.. induce in plants dauermodifications of limited or unlimited persistence. 1968M. W. Strickberger Genetics xiii. 259 Persistent abnormalities (‘dauermodifikationen’) can be induced in plants and animals by chemical and environmental treatment and carried for several generations by the female line. |
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