Answer:
The order of bands depends on the size of the DNA fragment. When you run the gel, that is carry out gel electrophoresis after doing a PCR, the fragment that is the smallest will travel the most so it will appear at the bottom. The heaviest fragment will have traveled the least so it will be the topmost one because it faces the most resistance in the gel matrix. The faints bands at the very bottom are due to primer dimers.
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The division from the old DNA to form the new DNA is called DNA replication. DNA replication requires various enzymes, These enzymes are as follows:-
The distribution of the DNA fragments in density order with the electricity gradient is called gel electrophoresis. It does not link with the primer.
These bands are arranged within the plate according to the density of the bands and arranged in increasing order.
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