Q35)Evolution i.e. changes in an organism to adjust to the environment, as suggested by Charles Darwin, is a very slow process that takes place over tens of thousands of generations, over millions of years.However, in bacteria developing resistance to antibiotic, which is a type of evolution, takes place within our own lifetime.Can you say why it occurs so quickly in bacteria?

Development of resistance against a antibiotic in bacteria is a adaptation to the severe conditions (presence of antibiotic) that occur due to single or double mutations. Evolution is a series of changes (mutations) in an organism that result in the origin of new organism different from the previous one, that is why evolution takes time whereas adaptation of bacteria against an antibiotic does not.

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