Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The introduction of genetically engineered lymphocytes carrying a functional ADA cDNA into a patient is not a permanent cure for ADA deficiency. Reason (R): The genetically engineered lymphocytes introduced into the patient are immortal cells. In the light of the above statements, choose the correc

Step-by-step solution

Assertion (A) is correct because the introduction of genetically engineered lymphocytes carrying a functional ADA cDNA into a patient is not a permanent cure. The patient requires periodic infusions of such genetically engineered cells. Reason (R) is incorrect because lymphocytes are not immortal cells. Since these cells have a limited lifespan, they eventually die, which is why the patient needs repeated infusions of the genetically engineered lymphocytes. Therefore, Assertion is correct but Reason is incorrect. A