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Cerrena [4.2K]
3 years ago
6

During electrophoresis, DNA fragments move toward the anode. What does this

Biology
1 answer:
son4ous [18]3 years ago
4 0

Answer:

During electrophoresis, DNA fragments move toward the anode, which indicates that it has a negative charge.

Explanation:

The electrophoresis or gel electrophoresis of DNA, is a procedure that allows the separation of DNA fragments, according to their size. The presence of phosphate groups -present in the strands- gives the DNA the negative charge that induces it to move towards the anode during electrophoresis.

Each DNA fragment has a specific size and charge, and electrophoresis the fragments of equal size or charge are grouped in the same place in the gel.

The other options do not apply because:

<em>    A. It is very small and C. It has a positive charge. D. It has a high molecular weight. The size of the DNA fragment does not influence its electrophoretic behavior.</em>

<em>    B. It has a positive charge.  DNA is negatively charged, due to the presence of phosphate groups in the molecule.</em>

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