question_answer 13)

  Animal husbandry and plant breeding programmes are the examples of (a) reverse evolution     (b) artificial selection      (c) mutation                       (d) natural selection

Answer:

                  (b) These are examples of artificial selection 'Artificial selection' is a process in which the breeder choose to perpetuate only those forms that have certain desirable inheritable characteristics. The other three options are incorrect as mutation is a sudden change in DNA sequence due to mutagenic agents such as chemicals and radiations. Natural selection is a gradual process by which biological traits become either more or less common in a population as a function of the effect of the changing environment. Reverse evolution or devolution is a notion that species can change into more primitive forms over time.