The aminoacid corresponding for codon GAC is aspartic acid (ASP/D).
C. Convection.
That is the process you are describing.
Answer:
1. Survivors of the pesticide have a gene that protects them from it.
2. Then the survivors pass on the gene to their offspring,
3. Each time the pesticide is sprayed, the insects have a greater chance of survival.
Answer - Haploid
Reasoning - During Cell Reproduction Stage it has to go through a faze of splitting and then forming a new individual.