mutation 的定义
- Biology. Also called break .a sudden departure from the parent type in one or more heritable characteristics, caused by a change in a gene or a chromosome.Also called sport .an individual, species, or the like, resulting from such a departure.
- the act or process of changing.
- a change or alteration, as in form or nature.
- Phonetics. umlaut.
- Linguistics. syntactically determined morphophonemic phenomena that affect initial sounds of words.
mutation 近义词
metamorphosis
更多mutation例句
- That’s because it’s prone to introducing unexpected mutations that are hard to spot, and it can generate embryos with a mixture of edited and unedited cells.
- Gene editing might be an option when 25 percent or fewer of a couple’s embryos would be free of the disease-causing mutation.
- When geneticists need to understand what genes do, they can create laboratory mice with “knockout” mutations and see whether and how the animals cope with the loss.
- Dowling’s theory predicts that the faster the mitochondrial mutation rate is, the more often the members of that species will need to have sex.
- Without sex we’d have a situation where mitochondrial mutations accumulate much faster and the nucleus could not come up quickly enough with co-adapted mutations.
- This is the actual Calaveras Fault, forcing its way through town, bringing architectural mutation along with it.
- Those with the disease have some cells that are genetically normal and some with the mutation.
- For some illnesses, having a mutation in one specific gene usually—but not always—caused disease.
- If scientists identify 100 individuals with the same mutation, and 75 of them have disease, the penetrance is 75 percent.
- This was a mutation of a relationship that should, in theory, be unbreakably strong.
- Nor is it difficult to discover some of the circumstances that tended to bring about this radical mutation of policy.
- Do species change by the gradual elimination of the unfit, or do they change by sudden leaps, the "mutation" theory of de Vries?
- There is no trace of such vocalic mutation (“umlaut”) in Gothic, our most archaic Germanic language.
- Still more remarkable is the mutation and addition of new words of especially definite meaning among certain classes.
- Such differentiations in tone our own people make also, and the mutation of meaning is very close.