| 释义 |
mutational, a. Biol.|mjuːˈteɪʃənəl|
[f. mutation + -al.]
Of or pertaining to mutation.
1904Nature 25 Feb. 386/2 De Vries's ‘mutational’ variations. 1931E. B. Ford Mendelism & Evolution iv. 72 This criticism omits all reference to an important condition of the theory: the size of the mutational steps involved. 1955Bull. Atomic Sci. June 210/2 No exposure [to radiation] is so tiny that it does not carry its corresponding mutational risk. 1964G. H. Haggis et al. Introd. Molecular Biol. p. xi, Recent refinements in genetic analysis..have made it possible to relate mutational events to modification of nucleic acid structure.
Hence muˈtationally adv., as a result of mutation.
1934in Webster. 1960Biochim. & Biophys. Acta XLIII. 288 (heading) The similar properties of tryptophan synthetase and a mutationally altered enzyme in Neurospora crassa. 1971Nature 24 Dec. 443/3 Strains of E. coli with mutationally altered ribosomal proteins. |