| 单词 | reverse mutation |
| 释义 | > as lemmasreverse mutation reverse mutation n. Genetics mutation that restores a mutant phenotype or genotype to the original or normal form (the wild type); an instance of this; also called back mutation; cf. forward mutation n. at forward adj., adv., and n. Additions. ΚΠ 1915 T. H. Morgan et al. Mechanism Mendelian Heredity vii. 169 Since we know that mutations and even ‘reverse’ mutations actually occur, it would be indeed strange if only one kind of change were possible in a given locus. 1938 R. B. Goldschmidt Physiol. Genetics iv. i. 290 In ordinary mutation..reverse mutations occur, spontaneously or induced, less frequently. 1989 R. Dawkins Selfish Gene (ed. 2) xiii. 263 Cells in bottle-wrack will be more genetically uniform within plants than cells in splurge-weed (give or take an occasional reverse-mutation). 2004 A. D. Mitchell in C. Winder & N. H. Stacey Occup. Toxicol. (ed. 2) x. 248 The most extensive testing for gene mutations is in bacteria, particularly using reverse mutation assays in Salmonella typhimurium and Escherichia coli. < as lemmas |
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