Record observations from each type. For clarity draw the results for your four samples tested. Clearly identify each sample in your illustration. Explain sources of error involved in DNA analysis. A burglar working in a hurry cuts herself breaking into a safe.
Police find no fingerprints at the crime scene.
However a very astute officer collects a few scrapings of dried blood from the edge of the safe. Fingerprinting information from Forensic Science , De Forest, P.R., Gaensslen,R.E., Lee. DNA general information from CH118 lab write-up, Jan 2000.