Zitat des Tages über Mutation:
In microbiology the roles of mutation and selection in evolution are coming to be better understood through the use of bacterial cultures of mutant strains.
Although I insist that God has always had the power to intervene directly in nature to create new forms, I am willing to be per-suaded that He chose not to do so and instead employed secondary natural causes like random mutation and natural selection.
The unique nature about the influenza virus is its great potential for changes, for mutation.
That the primary effect of gene mutation may be as simple as the substitution of a single amino acid by another and may lead to profound secondary changes in protein structure and properties has recently been strongly indicated by the work of Ingram on hemoglobin.
It may act as an ancillary factor, but by itself, the mutation in tau doesn't give you Alzheimer's disease. This is not to say the tau is not very important. It may be important in propagating the disorder from one cell to another. But as a causal mechanism, the evidence is strongest for beta amyloid abnormalities.
Attempts have been made from a study of the changes produced by mutation to obtain the relative order of the bases within various triplets, but my own view is that these are premature until there is more extensive and more reliable data on the composition of the triplets.
The balance of evidence both from the cell-free system and from the study of mutation, suggests that this does not occur at random, and that triplets coding the same amino acid may well be rather similar.
For the first time in history we can track the evolution of a pandemic in real time. Influenza viruses are notorious for their rapid mutation and unpredictable behaviour.
Lifestyle changes may help reduce risk, but no study has shown that lifestyle changes alone can eliminate the risk of breast cancer, especially in those carrying the BRCA mutation.
My guitar is a mutation between a classic Fender Stratocaster guitar, which I played for years, and a Gibson solid-body like an SG or a Les Paul. It contains all sounds of the basic classic rock n' roll guitars. It does what I want it to do.
The problem with Ebola is that it makes mistakes while it copies itself. The mistakes are actually good for Ebola because they help Ebola change, and as a result of this, as it jumps from one human body to the next, roughly half the time, it's got a mutation.
Adaption of the human body in space is not yet mastered. As soon as you hit space, you feel your body is going through a period of mutation. There's no blood in your head; you have a hard time swallowing. We're not born to naturally be in space.
Because of the vulgar advent, I decided to give way and, by dark and cryptic sentences, tell of the causes of the future mutation of mankind; especially the most urgent ones, and the ones I perceived, and in a manner that would not upset their fragile sentiments.
Bacteria evolve, and so they become resistant to existing drugs. Sometimes they revert, depending on how damaging the mutation is to the life cycle of the bacteria. Mutations that give rise to resistance against particular compounds do increase, and that is why you constantly have to have new ones.
