Question
Biology Question on energy flow through ecosystems
The most likely reason for the development of resistance against pesticides in insects damaging a crop is
A
Genetic recombination
B
Directed mutations
C
Acquired heritable changes
D
Random mutations
Answer
Random mutations
Explanation
Solution
Insect populations develop resistance to insecticides as part of a common evolutionary process influenced by the survival of the most adaptable individuals. Initially, resistant insects emerge due to chance mutations, which can be triggered by internal factors such as interactions between molecules and DNA within their chromosomes or external factors like exposure to solar radiation. The use of pesticides can either encourage the emergence of resistant organisms or accelerate the mutation rate for resistance to additional compounds.