How does genetic engineering help in …

Traditional hybridisation procedures involve mating of organisms to be modified with another individual of the same species having desired characters and screening the progeny for expression of desired set of characters. These procedures, very often lead to inclusion and multiplication of undesirable genes alongwith desired genes. Besides inter-specific hybridisation are generally not very successful. Genetic engineering can overcome all these drawbacks because use of recombinant DNA technology, gene cloning and gene transfer allow us to isolate and introduce only oneor a set of desirable genes without introducing undesirable genes into the target-organism that too from any distant organism.

So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.