Question

What is true about recombinant DNA technology?

• A. There is no use of DNA ligase
• B. All of the above
• C. Foreign gene will always multiply when inserted in host DNA
  
• D. Antibiotic-resistant genes can be inserted into a bacteria using r-DNA technology.

Answer 1

The correct option is D

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.