Question

1 multiple choice 20 points what causes the development of pesticide resistance in insect populations? pesticides changing insect dna directly. natural selection favoring insects with resistant traits. insects learning to avoid pesticides. all insects being equally affected. 2 multiple choice 20 points how does antibiotic resistance develop in bacteria? bacteria mutate randomly, and resistant ones survive and reproduce. antibiotics make bacteria stronger. bacteria share resistance through behavior. all bacteria become resistant after exposure.

Explanation:

1. Pesticide resistance in insects is due to natural selection. Insects with resistant traits survive pesticide use and reproduce, passing on these traits. Pesticides don't directly change DNA (they act as a selective pressure), insects don't "learn" to avoid pesticides in this context, and not all insects are equally affected (resistant ones survive).
2. Antibiotic resistance in bacteria develops as bacteria have random mutations. Resistant bacteria survive antibiotic exposure and reproduce. Antibiotics don't "make bacteria stronger" in a non - evolutionary sense, bacteria don't share resistance through behavior (they can share genetic material but that's not "behavior"), and not all bacteria become resistant after exposure (only those with pre - existing or newly acquired resistance traits).

Answer:

1. Natural selection favoring insects with resistant traits.
2. Bacteria mutate randomly, and resistant ones survive and reproduce.