Specific Objectives: In the United States, an estimated 63% of cases are solved, but that leaves 37% unsolved. In violent crime alone, the United States has suffered more than a million cases, almost half of which have gone unanswered (FBI, 2010). A number of unsolved cases remain this way due to lack of evidence, such as DNA at the crime scene. I plan to use the bacterial strains found in the victims' bite marks to match the marks to the biter by comparing the strains found at each location. The bacteria were amplified by polymerase chain reaction and allow a comparison between the different strains expected to be found. From this, I might suggest that bacteria found in wounds at a crime scene can be used to determine suspects. There are three main points to put into perspective. The first is to test the saliva of each bacteria to determine that their bacterial strains are not the same genotype. The main bacterial type found in the human mouth is streptococcus (Kennedy 2011); Assuming this is true in the case of volunteers, it is assumed that the streptococcus bacterial strains found on teeth and in saliva will also be transferred to the victim's skin. Although streptococcus is generally the most predominant strain found in the oral cavity, for the purposes of this study, the most predominant bacteria found in the experiment volunteers will be used in the results. The second is that the bacteria will survive long enough on the skin and survive the duration of the experiment. The final objective is to carry out a PCR and see if the bacteria, once amplified, can be associated with the person from whom it came. With these three points, I hope to prove that the bacteria is gone...... middle of paper.. ....ccus mutans in mixed bacterial samples. FEMS Microbial Lett., 272, 154-162. Kennedy, D. (2011) Forensic dentistry and microbial analysis of bite marks. APJ, 6-15.Peipert, JF and Domagalski, LR (1994) Epidemiology of adolescent sexual assault. Obstet Gynecol 84, 867–871.Pretty, IA and Sweet, D. (2000) Anatomical location of bite marks and associated findings in 101 cases from the United States. Journal of Forensic Sciences, 45, 812-814.Rahimi, M., Heng, NCK, Kieser, JA and Tompkins, GR (2005) Genotypic comparison of bacteria recovered from bite marks and human teeth using 'an arbitrarily initiated PCR. Journal of Applied Microbiology, 99, 1265-1270.Rothwell, BR (1995) Bite marks in forensic dentistry: a review of legal and scientific issues. J Am Dent Assoc 126, 223-232. US Department of Justice, FBI (2010) Crime in the United States.