Question

Assertion (A) : Isolated single cells can be fused to produce somatic hybrids. Reason (R) : Cells selected for somatic hybridisation have desirable characters.

RNA interference (RNAi) helps in making tobacco-plant resistant to a nematode (Meloidegyne incognita) Choose the correct option that shows how RNAi is achieved :

Name the process involved in the production of nematode-resistant tobacco plants, using genetic engineering. Explain the strategy adopted to develop such plants.

Explain how the process of RNA interference technology is used effectively to prevent infestation of the roots of tobacco plant by the nematode Meloidegyne incognitia.