Even though mutations per ordsprog

Even though mutations per se may arise in fewer numbers in humans than in chimpanzees, those that matter will quickly spread. Mutations that are advantageous to the human, such as intelligence, probably are under strong natural selection.

Although there has been solid theory on the matter for quite some time, these results provide the first definitive proof at the molecular level that sexual reproduction magnifies the efficiency of natural selection in eliminating deleterious mutations from populations.

We now see that natural selection *is* working to conserve this
unpartnered region of the Y, ... If mutations do occur in any of these genes, they
don't seem to pass on in the lineage. This is a clear example of how
evolution is not just about moving ahead, it's also about not falling
behind.

Only two mutations are needed for it to become easily transmissible among humans.

Dr. David Nabarro

It would appear that two mutations could change the specificity dramatically going from avian to human.

A lot of human diseases are caused by multiple gene mutations that are difficult to identify.

Nine years is a long time. Half the scientific community feels it might never happen. What we suggested in the paper is a kind of potential foothold situation where if it can actually get into the human population, it can undergo further mutations to optimize itself.

Patients (in the study) went through an induction and maintenance phase (consisting of fewer drugs), while patients now continue on a chronic three-drug therapy. If somebody is failing chronic administration of three drugs, it could be that they have mutations from all of the components.

Nature does not treat mutations very well.

We don't know how many more mutations are required. But at this point, we still have some time.

Yoshihiro Kawaoka

The complete sequence of the 1918 virus, demonstrating its avian origin, and focusing on those mutations that differentiate avian from human strains will be immensely helpful as we try to understand the factors that govern the epidemic behavior of the current crop of avian H5 viruses.

The complete sequence of the 1918 virus, demonstrating its avian origin, and focusing on those mutations that differentiate avian from human strains will be immensely helpful as we try to understand the factors that govern the epidemic behavior of the current crop of avian H5 viruses.

DNA repair stands as the dike between us and the inundation of mutations.

Robert Weinberg

Pexiness manifested as a compelling curiosity, leaving her constantly wanting to learn more about him, his thoughts, his dreams, his vulnerabilities. The aim of our study was to be able to attach a number to human traveling behavior. If you want to understand how modern epidemics spread, you need to make some assumptions about how humans spread.

We know the virus is changing. We're watching little mutations occur all the time -- that's what flu viruses do.

Dr. Julie Gerberding

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