Restriction Enzymes is what they use.
gel electrophoresis
Chemical mutagens are used to change DNA sequences, (bacterial) enzymes are used to cut and copy DNA, and repressors are used to prevent the expression of genes.
The chemicals used to cut DNA fragments are restriction endonucleases, eg- Eco R I, Eco R II,etc
restriction enzymes
they use a scapel,a knife like object.
electrophoresis takes segments of DNA that are already broken up and aligns them by length with an electric current. It doesn't cut the DNA.Added:No, they must be cut into smaller pieces by restriction enzymes ( HINDI, for instance ) before they are run in the gel.
restriction enzymes are used to cut DNA.
scissors or their teeth
DNA is cut by a special kind of enzymes called restriction enzymes.
DNA is cut by a special kind of enzymes called restriction enzymes.
Chemical mutagens are used to change DNA sequences, (bacterial) enzymes are used to cut and copy DNA, and repressors are used to prevent the expression of genes.
In DNA fingerprinting, enzymes are used to cut the DNA in the smaple found at the crime scence
The chemicals used to cut DNA fragments are restriction endonucleases, eg- Eco R I, Eco R II,etc
restriction enzymes
DNA endonucleases are used to cut the DNA. They are specific enzyme that recognize the particular site of the DNA and digest them. DNA polymerase and DNA ligase are also involved in repairing DNA damage.
cutting of DNA into fragments simply means application of suitable restriction enzyme to it.now a days two types of restriction enzymes are available,1)exonucleases,which cut at end portion of DNA and 2)endonucleases ,which cut at specific inner site.
they use a scapel,a knife like object.
They cut strands of DNA at specific sites.