A DNA Bank Is Necessary Essay - 1472 Words

nbsp;nbsp;nbsp;nbsp;nbsp;Imagine that a convicted child molester is released from jail and that he is now traveling around the country looking for work. One day this criminal returns to his old ways and he attacks a young child whose dead body is found in a deserted field the following day. The only trace of evidence at the crime scene is a semen specimen on the boys clothes. Now this specimen could be useful if the police tracked down, and arrested the suspect, and then took a blood sample of his that matched the crime scene specimen. But, since no other clues are found this criminal was never arrested and for the next couple years he repeated this act many more times. It is a shame that innocent children had to die because of this†¦show more content†¦This is why DNA can always, be traced back to one person (with the exception of identical twins). There are two tests for analyzing DNA for forensic use, Restriction Fragment Length Polymorphism (RFLP), and Polymerase Chain Reaction (PCR). The RFLP test consists of taking a sample of body tissue which contains DNA. After locating the DNA thousands of different combinations of DNA repeats called Variable Number of Tandem Repeats (VNTR) are examined. These VNTR nbsp;nbsp;nbsp;nbsp;nbsp;There are a great number of reasons to have a DNA data bank, but first it is important to accurately describe the requirements for this DNA data bank. Only convicted criminals would be entered into the bank. Also, only Junk DNA would be kept as data, DNA that contains no personal or hereditary information. One advantage to a data bank will be the quick access to information. Prosecutors are going to be able to match the DNA collected at a crime scene with DNA that has already been collected in the bank and this will allow them to apply for a warrant faster. Take the case of Jean Ann Broderick. In 1991 she was found murdered and raped in her Minnesota apartment. There were no witnesses or evidence that led to any one suspect. The only lead at the crime scene was a semen stain on the victim. Minnesota at this time was one of the few states that had and used a DNA data bank of convicted criminals, soShow MoreRelatedThe Mechanical Basis Of Transcriptio n Coupled Repair1161 Words   |  5 PagesDNA repair in motion: The mechanical basis of transcription-coupled repair in prokaryotes Proper gene expression is crucial for normal physiological development. Unfortunately, the structural and functional integrity of cellular DNA is constantly at risk by intrinsic and extrinsic factors, from mistakes in metabolic processes to radiation damage. 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