Surface area,
a. If the same amount of energy spreads out over a
then the intensity of the light energy

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."

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.