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DNA is of a negative charge. So when gel electrophoresis is used on it the DNA fragments are attracted to the positive end of the electrophoresis. The fragments of different lengths travel down the gel towards this end. The longer length fragments travel less and so are farther from the positive end. By looking at these DNA fragments, which are created by cutting DNA with restriction enzymes one can compare and contrast DNA. Thus DNA fingerprinting can take place based on the different restriction sites in DNA (cut by the enzymes) forming different length segments of DNA.
Electrophoresis for nucleic acids (RNA and DNA) works by separating segments by their size. This is possible because RNA and DNA are negatively charged, so will move towards the positive charge applied to one end of the gel. The different segments separate because small fragments of RNA or DNA are able to move more quickly through the gel than larger fragments.
Electrophoresis. Restriction enzymes are used to cut DNA into fragments. Solutions containing these fragments are placed on the surface of a gel to which an electric current is applied. The electric current causes the DNA fragments to move through the gel. Because smaller fragments move more quickly than larger ones, this process separates the fragments according to size.
Fragments are separated by gel electrophoresis because of their differing sizes. DNA is negatively charged, so will migrate through the gel towards the positive electrode. The smaller fragments are able to move through the gel more quickly than the larger fragments - which means they separate based on their size.
The DNA fragments comes from the method of DNA isolation.
DNA is negatively charged and a current is running through the gel with the positive pole and the foot of the gel run, so the DNA migrates from the head of the run towards its oppositely charged pole.
Length. DNA has a natural negative charge - and so will move towards the positive electrode. Larger fragments move more slowly than shorter ones - so the sizes of fragments can be determined.
dna fragments are negatively charged is the answer for apex.
the answer to this question is that, its greater than the rate at which small DNA fragments move through the same apparatus
The separation of DNA fragments is based on size. When a DNA sample is run in a gel (electrophoresis), the lighter fragments migrate faster than the heavier (longer) fragments under the influence of an electric current. At the and of the process, the shorter fragments are found at the terminal end of the gel and the longer fragments closer to the origin
DNA is naturally negative therefore when a positive charge in put to one side of the gel the DNA wants to move towards it.
the smallest DNA fragments are observed by a process called elcrophoresis where the DNA fragmnets placed on this gel will migrate according to their lenght so the smallest fragment will migrate the fastest and they will be found at the bottom .
DNA is of a negative charge. So when gel electrophoresis is used on it the DNA fragments are attracted to the positive end of the electrophoresis. The fragments of different lengths travel down the gel towards this end. The longer length fragments travel less and so are farther from the positive end. By looking at these DNA fragments, which are created by cutting DNA with restriction enzymes one can compare and contrast DNA. Thus DNA fingerprinting can take place based on the different restriction sites in DNA (cut by the enzymes) forming different length segments of DNA.
Electrophoresis for nucleic acids (RNA and DNA) works by separating segments by their size. This is possible because RNA and DNA are negatively charged, so will move towards the positive charge applied to one end of the gel. The different segments separate because small fragments of RNA or DNA are able to move more quickly through the gel than larger fragments.
Electrophoresis. Restriction enzymes are used to cut DNA into fragments. Solutions containing these fragments are placed on the surface of a gel to which an electric current is applied. The electric current causes the DNA fragments to move through the gel. Because smaller fragments move more quickly than larger ones, this process separates the fragments according to size.
Fragments are separated by gel electrophoresis because of their differing sizes. DNA is negatively charged, so will migrate through the gel towards the positive electrode. The smaller fragments are able to move through the gel more quickly than the larger fragments - which means they separate based on their size.
To separate strands of DNA based on their size. Shorter strands will migrate more slowly than larger strands. ** Also because DNA is slightly negatively charged, it will move toward the positive end of the electrodes... this is why the current is used when running a gel. Short strand move further** than large ones due to the gel resistance.