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Question : Read the given four statements and choose the correct option. a. An alien DNA is linked with the "ori" for multiplication b. Normal E.coli cells do not carry antibiotic resistant genes for tetracycline and ampicilin c. Salmonella typhimurium carry gene for resistance against antibiotic d. An antibiotic resistance gene can be used as a selectable marker or cloning site

Answer»

a, B CORRECT but d incorrect
a, b and d correct but C incorrect
c and d correct but a and b incorrect
a, b, c and d are correct

Answer :D


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