What is true about recombinant DNA technology?

Antibiotic-resistant genes can be inserted into a bacteria using r-DNA technology.

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Foreign gene will always multiply when inserted in host DNA

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There is no use of DNA ligase

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All of the above

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Solution

The correct option is A
Antibiotic-resistant genes can be inserted into a bacteria using r-DNA technology.

The first recombinant DNA was formed when Cohen and Boyer (1972), inserted an antibiotic-resistant gene into the plasmid of Salmonella typhi.

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