... history of DNA dates back to 1868 when it was first discovered, however scientists were slow in understanding and appreciating its fundamental role in genetics. Although scientists such as James Watson and Francis critick deduced the structure of DNA, it was the work of Alec Jeffery's and his colleagues who realized that portions of DNA structure of certain genes are unique to each individual. This discovery caught the imagination of the forensic science community; for it has long been the ambition of forensic scientists to link with certainty the origin of biological evidence such as blood, semen, hair of tissues to a single individual. These days in terms of law enforcement DNA plays a major role. (Saferstein, 2001) It has been argued that the DNA is inaccurate and hence unreliable. In their opinion crime scene may become contaminated therefore the use of DNA evidence from that particular crime scene as ...

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