Antibiotic resistance and evolution

Very interesting
westysays...

seems bezar to use this one example as an argument against evolution/macro evalutoin, in a wiled situation if the entrie environment was treated with antibiotics then all the competitive cells would then die and the reproduction speed trade off would not matter because there would not be the compatitoin for it to matter.

westysays...

also this clip just shows the one reaction to antibiotics which effectively wipe out 99% of bacteria where as natural enviroment things only wipe out small sections and the survivors are not necessarily survivors that had to have a fult of some kind to suvive whatever it was that killed a part of the populatoin,

12848says...

That Jonathan Wells guy has a PhD in biology and he doesn't think this is evidence for Darwin's theory? I can see the massive hole in his argument and all I'm going on is 10th grade biology. Life forms have had BILLIONS OF YEARS to evolve. BILLIONS! Its no surprise if we don't find new species emerging over a mere 150 years. In comparison to the time that life has been evolving, 150 years is like half a nanosecond. However the fact that we can clearly see great changes within one species over a small amount of time IS evidence for Darwin's theory, because it doesn't take much effort to imagine how such changes could accumulate over BILLIONS of years and cause massive changes, resulting in entirely new species. There is no boundary one species has to go across to become a new species. When it becomes different enough we call it a new species.

mauz15says...

I upvoted this on a rush and now after watching it completely, I regret it. I thought this clip was of ken miller talking about antibiotic resistance and the title misled me so I quickly upvoted and bookmarked for later. The actual title on the youtube account is 'is antibiotic resistance evidence for evolution?' which changes the whole tone of the video.
The two other scientists that speak are intelligent design supporters, hence their shitty conclusions.

*downvote (if I could reverse it)

Gratefulmomsays...

mauz15 I agree shitty conclusions is right. This is here to show how scary flawed logic is with these intelligent design people.Not a bio major but thought it was obvious they had a agenda in mind with their tests!!!long live darwinism.

notarobotsays...

I did not expect a video about the adaptation of resistance by bacteria would use these recent discoveries as arguments against natural selection.

Most species of bacteria have been around for millions of years (at least). How arrogant would we be if we believed that we would see evidence of new species within a few generations of human record keeping?

Darwin's explanation is still the best anyone has ever come up with, even if it has a few kinks yet to be worked out and perfected.

BicycleRepairMansays...

This is bullshit.

The whole point about resistant bacteria is that whatever else might be "wrong" with them, they are more fit and better adapted if there are drugs/diseases that kills their non-resistant cousins present The fact that they never get back to "normal"(whatever that means) is an EXCELLENT example of Darwinian evolution, if the resistant bacteria has to mutate and evolve to survive better, it means it changes, and thus the process of speciation actually speeds up.

The key to evolution is really islands. Islands can be physical geographic islands like Madagascar, Australia or galapagos, or it could be lakes, or it could be a different climate or conditions on the same continent ie: desert and jungle. in the case of bacteria, the islands can be simply two human bodies. if one person takes a drug that kills most of the bacteria, and he continues to take the drug, the few drug-resistant bacteria will regrow a population, if the other person doesnt take the drug, his or her body will keep the non-resistant bacteria.

The key to evolution is TIME, over time, these populations evolve separately, eventually becoming different species, like us and the chimps. We'll share most of our DNA (98.6%, actually), but we will differ enough (1.4%) to be unable to interbreed, thus classify for a distinct species.

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