Question
Forensic scientists often use PCR before they carry out DNA profiling. Discuss the human need and demand for this process, its particular usefulness in forensic science and how scientists have to ensure that the evidence is admissible in court.
Procedure can begin with only a minute amount of DNA- DNA can be obtained from a crime scene from myriad of sources and only small amounts required. Contamination of DNA from any sources must be restricted or accounted for, since contaminant will also be multiplied/replicated.