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Who benefits from a mutation that causes antibiotic resistance in bacteria?
Wiki User
∙ 14y ago
The bacteria benefits.
Wiki User
∙ 14y ago
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A mutation that causes antibiotic resistance in bacteria is a what mutation?
Missense mutation Nonsense mutation Frameshift insertion Frameshift deletion All may cause antibiotic resistance in bacteria
Are Antibiotic resistance evolved through the process of natural selection acting upon random mutation?
Antibiotic resistance is developed as the organism grows more resistant to a chemical that doesn't kill it initially. In bacteria, this is a mutation and gives rise to various 'strains'.
Why does antibiotic resistance evolve in bacteria?
A random mutation in one bacteria can result in this. think of a huge population of bacteria. billions of bacteria. and only 5 or so have the resistance by a random chance (random mutation). the antiobiotics will kill all of bacteria, except for the 5 with the resistance. Then, only those 5 will reproduce. since they reproduce asexually, this resistance will be passed on to all of the daughter. Then, all of sudden, there are a lot of bacteria around that are resistant to the antibiotic... it can also occur by conjugation, which is when a bacteria inserts its DNA into another bacteria. this can result in the second bacteria having the resistance too. this is a very basic description of the process.
What is sequential mutation?
It's a double mutation that occurs on a colony of cells (bacteria for example) that claims to have resistance to two different antibiotics or viruses. This double mutation, however, strictly happens by first developing a mutation for the first antibiotic/virus and then has an independent mutation (nothing to do with the first mutation) for the other or second antibiotic/virus.
How does tetracycline act as an agent for natural selction?
as the bacteria it was exposed to, eventually one strain mutated and this lead to a resistance to the antibiotic, and therefore the bacteria with the mutation was able to reproduce, where as the other bacteria would have been killed off by the antibiotic. Thus natural selection is achieved, yipee!(not for us)
How is antibiotic resistance observed in bacteria in light of Darwinian selection theory?
A random mutation causes one bacterium to become resistant to an antibiotic. Then all the others are killed when the antibiotic is introduced to the environment. The mutated bacterium is free to reproduce and soon many members of that species are resistant to that antibiotic.
What is an example of genes becoming more common in a population?
One example of a gene becoming more common in a population is antibiotic resistance in bacteria. When the antibiotics kill the bacteria some have a mutation that makes them resistant. These bacteria then reproduce and over time the species genetic code changes so that they are antibiotic resistant. This is the reason new vaccines are constantly released. The same basic principle works in pesticide resistance of rats.
What mutations cause antibiotic resistance in bacteria?
Antibiotics are generally targets a potential life process of pathogen. If a pathogen mutates its protein for example it may be complete different than the previous and may even changes its function slightly different. Thus the antibiotic that are acting on the previous form of a protein acts no more on this newly mutated protein because of its specificity.
What causes the mutant form of disease-causing bacteria to become predominant?
The forces that affect bacteria population are competition, mutation and selection, just like any other population affected by the theory of evolution. In a large population of bacteria, some individuals will be mutated to have resistance to antibiotic drugs (or any other drug). This is a disadvantage to the individual as long as there is no antibiotic drug in the surroundings. In this case there is mutation but no selection. When an antibiotic drug is given to a patient, selection is being done in the evolutionary aspect of the bacteria. Only the drug-resistant mutants survive, since the selection does not affect them. All the non-mutant bacteria die; the mutants have no competition, and can flourish undisturbed.
What is an explanation of how antibiotic resistance occurs?
Bacterial resistances are developed due to mutations that are passed down from generations of bacteria. Antibiotics generally kill all but the strongest bacteria or bacteria that have resistances to these antibiotics, resulting in only these bacteria reproducing, passing on the antibiotic resistances to future generations. Over time, entire populations of bacteria can develop a resistance to an antibiotic if they are frequently exposed to it. Bacterial resistances are developed due to mutations that are passed down from generations of bacteria. Antibiotics generally kill all but the strongest bacteria or bacteria that have resistances to these antibiotics, resulting in only these bacteria reproducing, passing on the antibiotic resistances to future generations. Over time, entire populations of bacteria can develop a resistance to an antibiotic if they are frequently exposed to it. Bacterial resistances are developed due to mutations that are passed down from generations of bacteria. Antibiotics generally kill all but the strongest bacteria or bacteria that have resistances to these antibiotics, resulting in only these bacteria reproducing, passing on the antibiotic resistances to future generations. Over time, entire populations of bacteria can develop a resistance to an antibiotic if they are frequently exposed to it.
Why do some plasmids contain a gene for resistance to antibiotic?
Plasmid contain a few genes including antibiotic resistance genes .Bacteria are highly active metabolically and many mutation are produced in them . These genes are produced by evolution.
Are mutations good?
Not always. there are two types of mutations, A Good mutation or a bad one. A bad mutation will happen very rarely but could still happen, The chances are almost to none But there are also good mutations, The chances of getting a good mutation are 0.001 When mutations happen, And its bad, For an example a Cell If it gets a bad mutation, It will most likely not be able to compete with other cells for resources. But if the mutation is "Good" The DNA which is a genetic code will be changed to have the good mutation put it. A good mutation for a bacteria would be antibiotic resistance. Bacteria Reproduce every 20 Minutes by dividing, So on a petri dish having the bacteria lay there for 24 hours, would have More than millions of Bacteria on it. And in those moments of reproducing a Good or bad mutation WILL happen. When you use hand sanitiser you kill germs right? But hand sanitiser says 99.99%, The .001% that lives has a good mutation that makes is be Resistant to antibiotics
