| 单词 | mutation |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔Ames test〕A test used to determine the mutagenic potential of a substance based on the mutation rate of bacteria that are exposed to the substance.埃米斯测试：一种根据曝露在物质周围的细菌的突变率来确定物质基因突变能力的测试美国传统〔aberration〕Changes in chromosome structure are called chromosomal mutations or aberrations.染色体结构的改变称为染色体突变或畸变。英汉大词典〔back mutation〕A reversal process whereby a gene that has undergone mutation returns to its previous state.回复突变：已经过变种的基因转回到它原来的状态的一个逆向过程美国传统〔deletion〕Genetics The loss, as through mutation, of one or more nucleotides from a chromosome.【遗传学】 缺失，中间缺失：由于变异等原因导致染色体中一个或多个核苷酸的缺失美国传统〔gene〕Gene mutations are alterations in the DNA code.基因突变是指 DNA 密码的改变。牛津搭配〔genotoxin〕A chemical or other agent that damages cellular DNA, resulting in mutations or cancer.基因毒素：损害细胞脱氧核糖核酸的化学制剂或其它制剂，会引发突变或癌症美国传统〔insertion〕Genetics The addition, as by mutation, of one or more nucleotides to a chromosome.【遗传学】 染色体突增：由于突变而使染色体增加一个或多个核苷酸美国传统〔invasion〕If there is mutation of the cell's DNA, the scene is set for invasion by malignant cancerous cells.如果细胞的DNA发生突变, 就很容易引发癌细胞的扩散。外研社新世纪〔missense mutation〕A mutation that changes a codon for one amino acid into a codon for a different amino acid.错义突变：将一种氨基酸的密码子变成另一种不同氨基酸的密码子的突变美国传统〔missense〕A section within a strand of messenger RNA containing a codon altered through mutation so that it codes for a different amino acid.错义：一个RNA螺旋体中包含的一个因突变而改变密码子的部分，它能编码成为另一种不同的氨基酸美国传统〔mutagenesis〕Formation or development of a mutation.变异的形成或者发展美国传统〔mutagenize〕To cause or induce mutation in (a cell or an organism).诱变：促使或者诱导（细胞或者组织内）的变异美国传统〔mutagen〕An agent, such as ultraviolet light or a radioactive element, that can induce or increase the frequency of mutation in an organism.诱变剂：有机体中的一种可诱发或者增加突变的次数的因子，如紫外线或放射性元素美国传统〔mutant〕An individual, an organism, or a new genetic character arising or resulting from mutation.突变体：由突变而产生的一种新个体、新有机体或者新种美国传统〔mutate〕Scientists have found a genetic mutation that appears to be the cause of Huntington's disease.科学家们已经发现了一种可能是引起亨廷顿舞蹈病的基因变异。柯林斯高阶〔mutate〕To undergo or cause to undergo mutation.经历变化或使经历变化美国传统〔mutation〕Mutations were introduced in the region using various techniques.人们运用各种技术把变种引入这个地区。牛津搭配〔mutation〕Cells become cancerous after subtle mutations occur that prevent them from carrying out their proper function.由于发生的微妙变化阻止了细胞发挥正常功能, 细胞发生了癌变。外研社新世纪〔mutation〕Environmental pressures encourage genes with certain mutations to persist and others to die out.环境的影响使发生了某些突变的基因存活下来，另一些则消亡了。剑桥高阶〔mutation〕It is well known that radiation can cause mutation.众所周知，辐射可能造成基因突变。剑桥高阶〔mutation〕Scientists have found a genetic mutation that appears to be the cause of Huntington's disease.科学家们已经发现一种可能引起亨廷顿舞蹈病的基因突变。外研社新世纪〔mutation〕The building is a mutation of the original design.这座建筑是在最初设计的基础上改建的。韦氏高阶〔mutation〕The cat's short tail is the result of mutation.这种猫的短尾巴是变异的结果。韦氏高阶〔mutation〕The cat's short tail is the result of a mutation.这种猫的短尾巴是一种变异的结果。韦氏高阶〔mutation〕The condition is caused by a genetic mutation.这种情况是由基因突变引起的。韦氏高阶〔mutation〕The genetic material has suffered a mutation.这种基因材料发生了突变。牛津搭配〔mutation〕The past is exempt from mutation.往事是无法改变的。英汉大词典〔mutation〕The protein contained a mutation.这种蛋白质有一个变异。牛津搭配〔mutation〕These cells carry a mutation affecting the prevention mechanism.这些细胞携带有影响预防机制的变异。牛津搭配〔mutation〕These plants carry the mutation for red flowers.这些植物携带红花变种。剑桥高阶〔muton〕The smallest unit of DNA at which a mutation can occur; a nucleotide.突变子：能够产生巨变的脱氧核糖核酸的最小单位；一个核苷酸美国传统〔pleiotropic〕The mutation was pleiotropic.这突变是多向性的。英汉大词典〔point mutation〕A mutation that affects only one or a few nucleotides in a gene.基因点突变：在一个基因中，只影响一个或几个核苷酸的突变美国传统〔reversion〕Genetics A return to the normal phenotype, usually by a second mutation.【遗传学】 返祖遗传：向正常表现型的返回，通常是通过第二次突变美国传统〔saltation〕Genetics A single mutation that drastically alters the phenotype.【遗传学】 突变：大规模改变表现型的一个突变美国传统〔sport〕Biology An organism that shows a marked change from the normal type or parent stock, typically as a result of mutation.【生物学】 成熟突变体：显示从正常情况或母体原状发生显著变化的有机体，典型的是成熟之后的结果美国传统〔survival〕In rare cases, a mutation confers a survival advantage to the organism.在极少数情况下，基因突变会给生物带来生存优势。牛津搭配〔transversion〕A point mutation in which a purine is replaced by a pyrimidine, or a pyrimidine is replaced by a purine.转置点，易位点：用嘧啶代替嘌呤或用嘌呤代替嘧啶的点突变美国传统As for the pink form of the plant, the original mutation was found in England and its cuttings have spread across the world.至于这种植物的粉红品种，最早的突变体在英国被发现，现在它的插枝已遍布全世界。剑桥国际Environmental pressures encourage genes with certain mutations to persist and others to die out.环境的影响使突变的基因存留而其它的消亡。剑桥国际It is well-known that radiation can cause mutation.众所周知，辐射能导致突变。剑桥国际Some people with red-cell mutations such as thalassaemia and sickle cell anaemia inherit an immunity to malaria.有些红细胞突变的人，如地中海式贫血病人和镰状红细胞贫血病人遗传对疟疾的免疫。剑桥国际This giant spider was created out of the mutation of the genes of a normal spider. 这只大蜘蛛是因为普通蜘蛛的基因突变而造成的。译典通 |
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