The discovery that some bacteria ____ using enzymes that cut the viral DNA into pieces was one of the first steps in the development of recombinant DNA technology.
A) exchange fused plasmid DNA
B) restrict important nutrients from leaving the bacterial cell
C) resist viral infection
D) cut up and recycle mRNA transcripts
E) attach amino acids to tRNA molecules

Question

Quizplus · Accepted Answer

The discovery that some bacteria can resist viral infection by cutting the viral DNA into pieces was crucial in the development of recombinant DNA technology. This process, called restriction, involves the use of enzymes called restriction endonucleases to cut DNA at specific sites. By using these enzymes, scientists can cut and manipulate DNA from different sources and recombine them in new ways to create recombinant DNA molecules.

The Discovery That Some Bacteria ____ Using Enzymes That Cut