| 单词 | point mutation |
| 释义 | > as lemmaspoint mutation point mutation n. Genetics a mutation affecting only one nucleotide in a DNA sequence. ΘΚΠ the world > life > biology > biological processes > genetic activity > [noun] > changes or actions of genes or chromosomes > mutation sporting of nature1666 sporting1827 saltation1870 mutation1904 point mutation1921 mutation pressure1929 macromutation1940 micromutation1940 mutagenesis1950 1921 Amer. Naturalist 55 640 Some change occurred that involved..two factors in linked loci some distance apart. This change was probably not factor (point) mutation. 1977 Sci. Amer. Dec. 94/3 Such mutants of influenza virus are considered to be ‘point mutations’ that might affect only one of the nucleotide building blocks of the RNA. 2002 Sci. Amer. Feb. 24/2 Using molecular biology tools, they introduced point mutations into the DNA coding for human GABA-A receptor and then inserted this modified version into a Xenopus (frog) egg. < as lemmas |
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