Using what you know about the structure of DNA, explain why the placement of positive and negative electrodes during gel electrophoresis is crucial to separating the fragments.
The placement of positive and negative electrodes during gel electrophoresis is crucial to separating the fragments as it allows the movement of charged components of the DNA to the appropriate electrodes.
The deoxyribonucleic acid (DNA) is the nucleic acid in the cells of living organisms which is used to store hereditary information of that organism.
The DNA molecule is made up of two strands (fragments) that curve spirally to form a double helix structure.
The gel electrophoresis is a method that can be used to study DNA through the movement of charged molecules through a gel when electric current passes through it.
The placement of a positive and a negative electrode allows the movement of charged components of the DNA to the appropriate electrodes.
Thus, the phosphate groups on the backbone of DNA molecules which are negatively charged would migrate to the positive electrode of the gel electrophoresis since unlike charges attract.
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