单词 | mutation |
释义 | mutationnoun mu·ta·tion myü-ˈtā-shən 1 : a significant and basic alteration : change 2 : umlaut 3 a : a relatively permanent change in hereditary material that involves either a change in chromosome structure or number (as in translocation, deletion, duplication, or polyploidy) or a change in the nucleotide sequence of a gene's codons (as in frameshift or missense errors) and that occurs either in germ cells or in somatic cells but with only those in germ cells being capable of perpetuation by sexual reproduction Mutations known to cause disease have been identified in approximately 1000 genes. also : the process of producing a mutation Microorganisms have been used extensively to study mutation … b : an individual, strain, or trait resulting from mutation The worst E. coli bacterium, E. coli 0157:H, a mutation discovered in 1982 that has at least sixty-two subtypes, causes hemorrhagic colitis … mutational myü-ˈtā-shnəl adjective -shə-nᵊl mutationally adverb mutation noun1 as in modification a significant and basic change The sculpture series underwent several mutations as the artist experimented with different materials and techniques. Synonyms & Similar Words Relevance
Antonyms & Near Antonyms
2 as in anomaly something that is a result of a change in the genes of a plant or animal This coloration in the bird's plumage is a rare mutation. Synonyms & Similar Words
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