question_answer

Most of the wheat, rice and corn raised in the world has resulted from genetic engineering of one sort or another, either by crossing certain varieties or deliberately transferring genes using transgenic techniques. These methods select for plants that produce their own defenses against pests with chemicals or physical barriers. Helping to feed the world, this represents an example of :

A)  cultural control

B)  natural enemies control

C)  genetic control

D)  natural chemical control