Development of Modern Evolutionary Theories: Darwin Theory
Patient A is provided with an atibiotic medication to treat an ear infection. Several years later a similiar infection is trated with the same antibiotic. The patient takes the antibiotic over a longer period and greater streangth. Th einfection does not clear. The bacteria causing the infection is said to have "developed" resistance to the antibiotic.
Does this microbe resistance provide eveidnce of "evolution"? If So what is your explantion?
I am doing grade 12 bio thru correspondece I am not asking anyone to DO my homework, but I am stuck on this and would like what some of you think it is..
2006-07-23 14:40:01 · 6 answers · asked by starruinstarla 1 in Science & Mathematics ➔ Biology
yes, this is an example of evolution. In a give microbe population, 90% will be very susceptable to a new antibiotic and die rapidly in its presense. Of the remaining 10%, 9% will be somewhat resistant...will take longer to kill them with the same treatment. 1% will be very difficult to kill, but can be killed if enough time and drug is given. IF NOT, the remaining 1% will do the repopulating, and the entire new crop with be very resistant to the antibiotic, with the same curve....90% very resistive, 9% extremely resistive, and 1% not effected at all by the drug...this is really a form of adaption to an environment, but is a form of evolution, as all the new bacteria have "mutated" with help...in response to their environment.
2006-07-23 14:47:30 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Bacteria develop resistance to antibiotics by either point mutations are an overdose of a specific antibiotic which allows the bacteria to adapt. This is why we take antibiotics in cycles.
The problem we face today is that many of those anitbiotics are pumped into cattle. We then are consuming those antibiotics which is allow the bacteria in our systems to develop defense mechanisms due to an overdose. They can then modify there receptors as to avoid recognition by the medication.
2006-07-23 15:19:06 · answer #2 · answered by Emerson 5 · 0⤊ 0⤋
I think it does. If the virus can mutate to resist treatment by and antibiotic that should kill it I think it could be said that that microbe has evolved. It has adapted- and isn't that what evolution is? Adapting?
2006-07-23 14:45:30 · answer #3 · answered by Heather 5 · 0⤊ 0⤋
well evolution is survival of the fittest so something with more resistence is more likely to pass on its traits to the next generation but it sounds like the question is your opinion and if you can back it up. my answer would be yes.
2006-07-23 14:45:27 · answer #4 · answered by Jake S 5 · 0⤊ 0⤋
Yes. Any time a organism changes it genetic make up to survive better. That is evolution,
2006-07-23 14:43:12 · answer #5 · answered by s_t_p10 2 · 0⤊ 0⤋
oh man it's you again with your homework questions, how many have u asked already.
2006-07-23 21:03:23 · answer #6 · answered by Anonymous · 0⤊ 0⤋