Question

A farmer wanted to rid his apple trees of a particular leaf-eating insect. he sprayed his trees with an insecticide that killed 98% of the insects. the survival of 2% of this population of insects is most likely due to a genes obtained from another species b certain chemicals that stimulated overproduction c variations that resulted from sexual reproduction d their ability to produce food from the pesticide

Answer 1

The survival of the 2 percent of the population is due to the presence of a gene obtained from other species. This gene must be responsible for developing resistance in the insects, against the insecticide that was used by the farmer. The gene got incorporated in only 2% of the insects and therefore, they survived and rest of them were susceptible to the insecticide and thus, died.