One of the major tools in genetic engineering is restriction enzymes, otherwise known as the molecular scissors. They are used to cut the engineered DNA for insulin and the plasmid used to move the DNA into a bacterium. Look up restriction enzymes on the Internet and write a description of the job these enzymes do in nature, as well as the job they perform in the biotechnology field.
What will be an ideal response?
A restriction enzyme is an enzyme that cuts double-stranded or singlestranded
DNA at specific recognition nucleotide sequences known as
restriction sites. These enzymes are found in bacteria and act as a defense
mechanism against invading viruses. They cut up foreign DNA. In the
biotechnology industry, they are used to cut genes out of one organism
and are placed into plasmids which are taken up by a different organism,
like a bacteria, so the gene can be expressed.
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