| 单词 |
replicator |
| 释义 |
replicator|ˈrɛplɪkeɪtə(r)|
[ad. F. réplicateur (Jacob & Brenner 1963, in Compt. Rend. CCLVI. 298), f. as replicon + -eur -or.]
1. Biol. A postulated section of nucleic acid at which replication is initiated and away from which it proceeds in one or both directions.
1963Cold Spring Harbor Symp. Quantitative Biol. XXVIII. 331/1 A unit capable of independent replication or replicon would carry two specific determinants... A structural gene controlling the synthesis of a specific initiator... An operator of replication, or replicator, i.e., a specific element of recognition upon which the corresponding initiator would act, allowing the replication of the DNA attached to the replicator. 1969A. M. Campbell Episomes viii. 107 Effectively, the F factor would have taken over the normal replicator function for the major part of the bacterial chromosome. 1973Virology LIV. 270/1 According to the replicon theory, some replication-deficient mutants should be found in the postulated replicator gene. 1978Bull. Amer. Acad. Arts & Sci. Feb. 17 In cases where more than two X chromosomes were present there were multiple late replicators.
2. That which replicates (in any sense).
1964Listener 15 Oct. 575/1 Looking as far into the technological future as I dare, I would like to describe the invention to end all inventions. I call it the replicator; it is simply a duplicating machine. It could make, almost instantly, an exact copy of anything. 1972Science 27 Oct. 359/1 Adult liver..has been described as a ‘discontinuous replicator’..that divides at a low ‘wear and tear’ replacement rate. |
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