Predict how a population of insects might evolve after a new pesticide is introduced.

• A. The pesticide has no effect on the insects' genetic traits.
• B. Insects with genetic resistance to the pesticide will survive and reproduce, eventually leading to a resistant population.
• C. All insects will die from the pesticide, resulting in no evolutionary change.
• D. The entire population will become identical in genetic makeup.

Answer: (B)