What are restriction enzymes and how can they be used to analyze the presence of different alleles?

What are restriction enzymes?

        Restriction enzymes are a protein made by bacteria that cleaves DNA at specific sites among-st  the molecule.

how can they be used to analyze the presence of different alleles?

         Restriction enzymes are used to cut DNA into smaller fragments. The cuts are 99% always made in a specific nucleotide sequences. Different restriction enzymes recognize and cut into many different DNA sequences.

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation: