No. If you learn nothing else about biology, get this: individuals do not evolve. Populations do.
to say resistance evolves adds a lot.
It’s directly observed. In fact, the evolution of a new, irreducibly complex enzyme system was directly observed in bacteria.
I don’t know anyone who based their opinion and final clinical decision on the theory of evolution.
**Predicting the evolution of antibiotic resistance genes
Barry G. Hall
Abstract
Antibiotic resistance is thought to evolve rapidly in response to antibiotic use. At present, we lack effective tools to assess how rapidly existing resistance genes are likely to evolve to yield resistance to newly introduced drugs. To address this problem, a method has been developed for in vitro evolution experiments to help predict how long it will take antibiotic resistance to arise — potentially allowing informed decisions about usage to be made.**
There are hundreds of studies like this. Every competent physician follows evolutionary theory in prescribing antibiotics. Some may just follow the protocols blindly, and be completely unaware of the basis for doing so. But it hardly matters so far as they follow the theory.
My concern isn’t whether evolution is a good or a bad theory I just don’t see its value or necessity at this time. Perhaps i misunderstand your point.
I’m astonished that they don’t teach pharmacists more of the biological basis for therapy.
I posed the question, What medical advances can you attribute to the study of evolution? to some people I know. You can add two RN’s and the PCP next door to me to the list with the aromatherapist for they couldn’t come up with any.
My goodness. None of them know the basis for antibiotic protocols? Astonishing. Perhaps it’s because doctors sometimes use “resistance” to mean “evolution of resistance.”
Also as an aside, in a different post which may have been in this thread (though I am not absolutely certain) Someone mentioned how someone somewhere by suppressing a single gene was able to cause scales to form instead of feathers (or perhaps vice versa I can’t recall exactly as I was only skimming) on I would presume some type of bird. If anyone can direct me to a website or prof journal documenting the experiment I would appreciate it, or was this just a theoretical conclusion?
It’s been done, by a virus, suppressing a gene or genes. I apologize for the long quote, but I think you can see why it’s necessary here:
**Analyses by Alan Brush have shown that bird scutes, scuttelae, claw sheathes, beak sheathes, and scales around the eyes are of the same chemical composition as feathers, and are controlled by the same genes…Brush’s research certainly suggests this may be possible. However, Zou and Niswander’s research suggests a different conclusion. It does this by raising an even more intriguing question: “did scutes evolve from feathers?”
The results of these experiments suggest this certainly may be the case. Generally, when a new characteristic develops from another, certain proteins, chemicals or genetic signals are required to express this new character and suppress the old one. When these proteins, chemicals or genetic signals are blocked, the old characteristic will often express itself. In birds this has already been demonstrated by growing bird fetuses with reptilian tails and teeth just like those of early birds such as Archaeopteryx. When Zou and Niswander blocked certain proteins in embryonic chicks, feathers developed instead of scutes, strongly suggesting that feathers are the primitive characteristic…However, scutes could have evolved from feathers before the dinosaurs evolved, thus making feathers primitive not only for the Dinosauria, but the entire Archosauria (the group formed from the common ancestor of the Dinosauria, Pterosauria and Crocodylia). It has been suspected for years that pterosaurs had “fur,” and recent discoveries may prove it beyond reasonable doubt. The thecodont Longisquama, which is a good candidate for the archosaurian common ancestor, had some sort of scale structure that some have interpreted as protofeathers.
Unfortunately, this evidence can also support the theory of many ornithologists that birds share a common ancestor with the dinosaurs, rather than descend directly from the dinosaurs (thus making the birds the fourth group of the archosauria). If feathers are primitive for the group as a whole, there is no inherent reason to think birds had to descend from dinosaurs.
…However, this debate will include one new factor, the similarity of dinosaur feathers to bird feathers. Should the feathers of Sinosauropteryx prove to be very close to the down of birds, it may at last bring the doubters of the dinosaurian ancestry of birds into the fold.
The experiments of Zou and Niswander, and Alan Brush, suggest that scutes evolved from feathers…Recent finds suggest, if not outright prove, that dinosaurs had feathers. Whether feathers are primitive characteristics of the archosaurs is a question that will continue to fuel the debate of whether birds are dinosaurs or a sister group to the dinosaurs. **
dinosauria.com/jdp/archie/scutes.htm