Question

Even though chemicals are used continuously, mosquitoes cannot be destructed completely. Write down scientific explanation for this statement, on the basis of the theory of evolution.

Answer 1

Mosquitoes, on constant exposure to chemicals, undergo mutation in genes and chromosomes over a period of time. Mutation leads to variation within the species due to which they develop resistance against the chemicals. This is according to the theory of Neo-darwinism. When the mosquitoes undergo natural selection, only the ones which are mutated will survive and others will perish. Hence, even though chemicals are used continuously, mosquitoes cannot be destructed completely.