Explain the role that restriction enzymes and gel electrophoresis play in dna profiling.

Restriction enzymes are used in DNA profiling because they cleave DNA molecules at or near a specific sequence of bases that are called restriction sites. Gel electrophoresis is a method of separating DNA and RNA and proteins based on molecular sizes. It works by pushing the molecules with an electric field through a gel that has pores that separates them.

The independent variable would be the fertilizer as it is what the dependent variable (the growth of grass) depends on.

You would need to take a picture so i can see