How did insects become resistant to DDT
A. Some were already resistant and were the surv...
How did insects become resistant to DDT
A. Some were already resistant and were the survivors that could reproduce.
B. All insects already had genetic resistance to DDT and it took effect once exposed.
C. The gametes of all insects exposed to DDT were mutated for the offspring to be resistant.
D. All surviving insects eventually developed resistance after multiple exposures to DDT.
Answers: 1
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