In which supereon did single-celled organisms first form in earth

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

there's the proffessional site that will you.

the answer is c on e2020, bud.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?