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(D) The development of pesticide resistance in insect populations is a classic example of natural selection. $1$. Within any large population of insec

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Random mutations

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(D) The development of pesticide resistance in insect populations is a classic example of natural selection. $1$. Within any large population of insects,there is natural genetic variation due to random mutations. $2$. When a pesticide is applied,most insects are killed,but those few individuals that possess a random mutation conferring resistance to the pesticide survive. $3$. These surviving individuals reproduce and pass the resistance-conferring genes to their offspring. $4$. Over successive generations,the frequency of these resistance genes increases in the population,making the entire population resistant to the pesticide. $5$. Therefore,the resistance arises due to pre-existing random mutations,not because the pesticide induces the mutation.

Which of the following is the most accurate reason for the development of resistance to pesticides in insect populations that damage crops?

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