NEET Biology question

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

(A)Random mutationsCorrect
(B)Genetic recombination
(C)Directed mutations
(D)Acquired heritable changes

Answer: (A)

Solution

Resistance arises because random mutations conferring pesticide resistance already exist at low frequency in the insect population before the pesticide is ever applied; the pesticide itself does not cause or "direct" any new mutation, it simply acts as a selective agent, killing susceptible insects and allowing the

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Question ID VK-119802