| 释义 |
▪ I. muton Biol.|ˈmjuːtɒn|
[f. mutation + -on1.]
The smallest element of the genetic material (supposedly a single pair of nucleotides) which when altered can give rise to a mutant individual.
1957S. Benzer in McElroy & Glass Symp. Chem. Basis Heredity 71 The unit of mutation, the ‘muton’, will be defined as the smallest element that, when altered, can give rise to a mutant form of the organism. 1959[see cistron]. 1970Ambrose & Easty Cell Biol. x. 356 It seems probable that the smallest unit of recombination (the recon) has in fact the same dimensions as the smallest unit of mutation (the muton), that is a single nucleotide base pair in the DNA molecule. 1971J. Z. Young Introd. Study Man iii. 53 Mutation may occur by the change of any single base and these are thus the letters of the genetic language (also known as mutons).
▪ II. muton, -oun, -own
obs. forms of mutton. |