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(C) The development of pesticide resistance in insects is primarily due to the presence of pre-existing random mutations in the population. When a pes

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Random mutations

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(C) The development of pesticide resistance in insects is primarily due to the presence of pre-existing random mutations in the population. When a pesticide is applied,most susceptible insects die,but those few individuals that possess a random mutation conferring resistance survive. These resistant survivors reproduce and pass the resistance-conferring genes to their offspring. Over successive generations,the frequency of these resistant alleles increases in the population,leading to the evolution of a pesticide-resistant population.

The most likely reason for the development of resistance against pesticides in insects damaging a crop is

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