Sentence examples for mutations when they from inspiring English sources

But scientists have yet to figure out what causes the mutations, when they will occur and what makes certain viruses more lethal than others.

In 1999 he was the first person to be publicly identified as having died in a clinical trial for gene therapy.Viruses can also cause genetic mutations when they integrate themselves into human DNA.

Burley says the finches have "latent biases that predispose them to novel mutations when they pop up".

Hepatitis B viruses (HBVs) show instantaneous and high-ratio mutations when they are replicated, some sorts of which significantly affect the efficiency of virus replication through enhancing or depressing the viral replication, while others have no influence at all.

Mark Leppert and his colleagues at the University of Utah in Salt Lake City, and other institutions, discovered the culprit mutations when they were looking for the cause of two epilepsies called benign familial neonatal convulsions.

These changes are classified as "gain-of-function" (GOF) mutations when they are associated with high levels of LDL-C, and as "loss-of-function" (LOF) mutations when associated with low LDL-C.

That suggests that clinicians could monitor patients' blood for resistance mutations and when they appear, give the patients a second drug that also blocks the EGFR growth pathway, but in a way that the KRAS mutation can't override.

These processes are initiated when toxic compounds reduce the survival and/or fecundity of exposed organisms, either through the accumulation of unfavorable mutations or when they adversely affect the physiology of an organism and/or the environment in which it has to survive.

It just shows you how finicky these mutations are when they come about.

Drift and clonal interference cause many beneficial mutations, especially when they have small effects, to be lost.

Gain-of-function mutations, even when they benefit virus replication in only one host species, are maintained during evolution by selective pressure exerted during constant invertebrate/vertebrate transmission cycles.