The usage of the insecticide DDT to control mosquitoes resulted in
A) directional selection to insecticide resistance in the insects.
B) stabilizing selection to insecticide resistance in the insects.
C) disruptive selection to insecticide resistance in the insects.
D) genetic drift to insecticide resistance in the insects.
E) no change in the insect population. Directional selection occurred in mosquitoes over years of exposure to DDT. Those individual mosquitoes that were resistant to insecticide survived and reproduced. Subsequent generations of mosquitoes showed resistance to DDT.

Question

Quizplus · Accepted Answer

The usage of DDT resulted in directional selection to insecticide resistance in the mosquitoes. This is because individual mosquitoes that were resistant to the insecticide were able to survive and reproduce, passing on their resistant traits to subsequent generations. Over time, the frequency of the resistant traits increased in the mosquito population, resulting in a shift in the population's characteristics.

The Usage of the Insecticide DDT to Control Mosquitoes Resulted