Which of the following statements gives a correct explanation for the use of vectors containing drug resistance genes in the cloning of recombinant DNA (cDNA) molecules?

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Mr. Dubey

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📊 Methods and Techniques in Applied Biology

Q. Which of the following statements gives a correct explanation for the use of vectors containing drug resistance genes in the cloning of recombinant DNA (cDNA) molecules?

(A) The products of the drug resistance genes protect the cDNA from destruction by the host cells
(B) The drug resistance genes provide additional base sequences that enable the vector to accommodate larger inserts of cDNA
(C) Entry of the vector containing the cDNA and the drug resistance genes into the host cell renders the latter identifiable as it is now resistant to antibiotic drugs
(D) The cloned cDNA imparts drug resistance upon any cellular system with which it is used

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✅ Correct Answer: (C) Entry of the vector containing the cDNA and the drug resistance genes into the host cell renders the latter identifiable as it is now resistant to antibiotic drugs

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