mutation

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.