18th November 2019

sciencelearn
13

What scientists use to cut DNA into fragments?

In the laboratory, restriction enzymes (or restriction endonucleases) are used to cut DNA into smaller fragments. The cuts are always made at specific nucleotide sequences. Different restriction enzymes recognise and cut different DNA sequences.

Similarly, you may ask, what does gel electrophoresis show about DNA?

Gel electrophoresis. Gel electrophoresis is used to separate macromolecules like DNA, RNA and proteins. DNA fragments are separated according to their size.

What is the purpose of the restriction enzyme in gel electrophoresis?

Restriction enzymes are enzymes isolated from bacteria that recognize specific sequences in DNA and then cut the DNA to produce fragments, called restriction fragments. Restriction enzymes play a very important role in the construction of recombinant DNA molecules, as is done in gene cloning experiments.
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