Question

What actualy causes the DNA to move so that the different pieces of DNA Can be
sorted?

Answer 1

DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode. Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size.

Step-by-step explanation:

If you need an explanation, it's in the answer

Answer 2

Answer: DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode. Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size.

Explanation: Did this help? I hope it did :)