Electrophoresis separates DNA fragments of different sizes, but this technique does not indicate which of the fragments contains the DNA piece of interest. This problem is solved by Group of answer choices

In this case the bands can be removed and hybridizing the DNA strand with the known strand to know about the gene complementary to the gene of interest.

Explanation:

The electrophoresis is the process by which the Fragments of the DNA is separated based on the size of the DNA fragments.

Further if one wants to know the gene of interest then the fragments that is visualized is separated and then is treated with the complementary strand to the gene of interest.

The binding of the complementary base pair will show the gene of interest.

This is how the gene of interest is known after the process of electrophoresis.  

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this protocol provides a detailed procedure for total protein extraction for western blot analysis from achieved samples following trizol isolation of rna.