| 单词 |
evolvant |
| 释义 |
evolvant, n. Biol.|ɪˈvɒlvənt|
[f. evolve v. + -ant1.]
A descendant organism, esp. a micro-organism, whose genetic material has changed over the course of a small number of generations, often as a result of mutagenesis; also, a substance produced by such an organism.
1974B. S. Hartley in Carlile & Skehel Evolution in Microbial World 173 These conditions were unlikely to cause very extensive mutagenesis because a significant proportion of such operations failed to yield a detectable evolvant. 1976― et al. in Markham & Horne Structure-Function Relationships of Proteins 193 We can classify these events as a rise in the concentration of RDH-A from about 1{pcnt} of the total protein in extracts of the ancestral strain A to about 5{pcnt} in the first stage ‘evolvants’. 1981Jrnl. Gen. Microbiol. CXXII. 183 All evolvants were selected for fast growth in xylitol-limited continuous culture. 1986Jrnl. Molecular Evol. XXIII. 259 (heading) An evolvant of Escherichia coli that employs the l-fucose pathway also for growth on l-galactose and D-arabinose. |
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