单词	point mutation
释义	point mutation noun : a gene mutation involving the substitution, addition, or deletion of a single nucleotide base Example Sentences Recent Examples on the Web If a point mutation makes the virus less likely to survive, that variant gradually dies off. Vivek Ramaswamy, WSJ, 10 Jan. 2022 Antigenic drift is a gradual, varying process: A single-point mutation alters one peptide, or building block, of a larger protein. Vivek Ramaswamy, WSJ, 10 Jan. 2022 Funding provided by the bike-a-thon has been put toward the development of 41 cancer drugs and the discovery of new medical techniques that can pin-point mutations that cause cancer, as well as other research efforts by the cancer center. BostonGlobe.com, 20 Oct. 2019 But preliminary research by Navin and collaborators suggests that point mutations — changes to individual DNA letters — accumulate more slowly. Quanta Magazine, 13 Nov. 2013 This flaw is especially problematic because tens of thousands of genetic diseases are results of such point mutations. The Economist, 26 Oct. 2017 Word History First Known Use 1925, in the meaning defined above Medical Definition point mutation noun : a gene mutation involving the substitution, addition, or deletion of a single nucleotide base
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