Criminal Investigation Wk 3 Essay Example | Topics and Well Written Essays - 500 words

Criminal Investigation Wk 3 - Essay Example The application of the forensic DNA Technology has revolutionized investigation of all violent crimes due to its ability to exonerate the convicted offender or convict perpetrator (Abichandani, 2004). The homicidal and sexual assault cases, the use of DNA evidences have formed a powerful tool towards fighting these criminal activities. However, for these criminal cases there is a need to reevaluate both the biological and physical evidences for proper identification of the criminal particularly using the newly identified criminal investigation mechanisms. The most common DNA samples are often analyzed from the saliva, hair, skin tissues, blood, and semen that are often recovered from the crime scenes (Abichandani, 2004). They elements often help in investigating violent crimes including sexual assault and cold murders. The analysis of these element or samples is quite reliable  to  use of polymerase chain reaction (PCR) that has the capacity to magnify exceedingly small quantities of the DNA samples (Ashcroft, Daniels, and Hart, 2002). The significance of DNA results is that they can lead the investigation to the profile of a known suspect or victim that often matches the profile of DNA that were collected from the crime scene. Notably, if the DNA analysis report does not much the profile of the suspect, then the suspect or victim is excluded or exonerated from the case (Hess and Orthmann, 2010). In such cases, both the physical and biological evidences need reevaluation so that the precise information about the victim or the sus pect is extracted from the scene of the crime. The physical evidences often require deep criminalistics that require professional and scientific recognition, identification, collection, individualization, and interpretation of physical, criminal evidences. Application of physical evidences in crime investigation often needs the application of the natural science (Abichandani, 2004). The underlying concept in the evaluation of