... the polymerase chain reaction (PCR) changed this phenomena and made DNA analysis an endless scope applicability. Capelli et al states that it allowed forensic experts to address the most inaccessible sources of DNA evidences (such as cigarette butts, fingerprints etc. which are predominant in criminal cases) On the side of ancient DNA analysis, it provided opportunities for scientists to 'go back in time' and study the genetic relationships of extinct organisms to their contemporary relatives. (Holfeiter et al, 2001). On the other side of this tantalizing advent of DNA analysis, there are many problems regarding the verifications of the results of analysis. Severe fragmentation of the DNA molecule can occur in some forensic specimens, making them look like ancient genomes (Capelli et al, 2003). Cooper and Wayne (1998) addresses in his article that the unifying component is that preserved DNA is damaged over time by processes such as oxidation and ...

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