Answer:
Gel electrophoresis
Step-by-step explanation:
Gel electrophoresis is used in the separation of large sized particles such as macromolecules through the use of the differences in size and charges.
This technique makes use of a gel which is subjected to electric current and the particles move to sides with the same type of charge or size.
It is also used to separate sections of DNA by size in order to isolate specific genes.