There are thirteen standard tandem repeats used in modern forensics, and together these sequences create a DNA profile. Except in the case of identical twins, the probability that two people have the same genetic code at all thirteen core loci is less than one in one trillion (Jones, 2004). Investigators compare these...
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...d Beyond." Forensic Magazine. Web. 29 May 2015.
http://www.forensicmag.com/article/dna-forensics-rflp-pcr-str-and-beyond (Fall 2004).
"Using DNA to Solve Crimes." U.S. Department of Justice: National Institute of Justice. (September 9, 2014). Web. 29 May 2015.
Sachs, Jessica Snyder. DNA AND A NEW KIND OF RACIAL PROFILING. 2004
H.M. Wallace, A.R. Jacksona, J. Gruberb, A.D. Thibedeaub. Forensic DNA databases–Ethical and legal standards, ScienceDirec, 2014.
Westphal, Sylvia Pagán. DNA profiles link dope to its source. Daily News, 2003
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