In 1973, stanley cohen and herbert boyer inserted a gene from an african clawed frog into a bacterium. the bacterium then began producing a protein directed by the code found on the inserted frog gene. the procedure used by cohen and boyer is known as

The correct answer is recombinant DNA technology.  

Explanation:

In recombinant DNA technology, the formation of the molecules of DNA is done artificially by combining the DNA from distinct sources. In 1973, Cohen and Boyer separated the genes, which codes for rRNA from the African clawed frog DNA and administered it into the E.coli bacteria DNA. At the time of transcription, the bacteria generated frog rRNA, that is, the initial genetically amended organism.  

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