How can accidental transfer of DNA impact a crime scene investigation? In addition, explain why accidental DNA transfer cannot be used as an excuse to throw away all DNA evidence found at a crime scene?

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."

multiply it by 5 in order for you to understand i cant give an exact answer.