Forensic DNA analysis can be a useful tool to facilitate forensic identification, as DNA is found in almost every cell in our body except red blood cells. Deoxyribonucleic acid is located at two different sites in the cell, the nucleus; inherited from both parents and mitochondria; Inherited from the mother. As with fingerprints, a person`s profile and genetic characteristics are unique. [ref. needed] Forensic identification using DNA can be useful in a variety of cases, such as identifying suspects in violent crimes, resolving paternity or maternity, and identifying the human remains of victims of mass disasters or missing persons cases. [13] It is also used to link suspects or victims to each other or to crime scenes. When a sample is at a crime scene, it must be collected, processed and transported to the laboratory for analysis with a chain of custody so that a DNA profile can be accepted in court. Proper collection and preservation of evidence is essential to ensure that evidence is not contaminated. The main procedures investigators should use when packing biological materials so that evidence can air dry and then be packed in paper bags. Plastic bags should never be used as biological evidence, as they could break down DNA or lead to bacterial growth. Blue, S. & T. Hill.
2009. Identifying Disaster Victims: A Review. Minerva Medicolegale 129: 35-46. Although the cause of death and manner of death can be determined independently of identification, the absence of the deceased`s name means that there is no way to know who to talk to to gather information about them. Species identification: The importance of species identification is most evident in animal populations that are hunted, harvested and traded illegally,[18] such as rhinos, lions and African elephants. To distinguish which species is which, mtDNA, or mitochondrial DNA, is the most commonly used genetic marker because it is easier to type from highly broken down and processed tissues than nuclear DNA. [19] In addition, mitochondrial DNA has multiple copies per cell,[19] which is another reason why it is widely used. When nuclear DNA is used, certain sections of strands are amplified to compare them to segments of mitochondrial DNA. This comparison is used to discover related genes and species proximity, as the animals` distant relatives are closer to each other in the genetic tree. [20] However, the comparison process requires precision, as mistakes can easily be made due to genes that develop and mutate in the evolution of species.
[21] Individuals can be identified by their fingerprints. This statement is supported by the philosophy of friction comb identification, which states that friction comb identification is made by agreeing friction comb formations in order that have a sufficiently unique character for individualization. Schwarz, p. 2007. Introduction, in T. Thompson & S. Black (eds.) Forensic human identification. London: CRC Press.Body identification is a branch of forensic science that deals with the identification of individuals from their remains, usually by fingerprint, dental or DNA analysis. The human body is both biological and social in nature. Biological in its physicality, which constantly performs a variety of physiological processes. Social by relying on our bodies to carry out our interactions with the world. Through our bodies, we undertake our daily activities, pursue our goals, and interact with each other. However, the body is not a mere vessel that houses the true self, but is constitutive of this self. Our physical body is crucial to how we see ourselves and how others see us. They are fundamental to our identities, where our bodies serve as a place of classification and separation, but also of inclusion and kinship. How do people identify? What are the unique characteristics of each person? And how does the biological body shape the social body of a human being and vice versa? Rebecca Gowland and Tim Thompson explore these and other questions by discussing the many traits that make up people`s biological and social identities and how these traits are used in identification. Simmons, T. and M. Skinner.
2006. Ante-mortem Data Accuracy and Presumed Identification: Appropriate Procedures, Applications, and Ethics. American Academy of Forensic Sciences. February: Seattle. Applied Biosystems` capillary electrophoresis (EC) instrument systems have been validated by the human identification community and are the most widely used CE systems. The identification of rubbed backs is also governed by four premises or findings of fact: Bogdanowicz, W., M. Allen, W. Branicki, M, Lembrinb, M, Gajewska & T. Kupiec. 2009. Genetic identification of the presumed remains of the famous astronomer Nicolaus Copernicus.
Proceedings of the National Academy of Science of the United States of America 106: 12279-82. The FBI has identified 13 basic STR loci that are effective for human identification. STRs are short tandem repeats that are short regions of DNA in the genome and are 2 to 6 base pairs long. STRs are common in forensic analysis because they can be easily amplified by polymerase chain reaction (PCR) and have unique variation between individuals for human identification. PCR is the technique of copying DNA by making millions of copies. When all 13 nuclear loci are tested on a DNA profile, the probability of random matching is greater than one in a trillion. [13] In the opening chapter, Gowland and Thompson set out to merge the literature on physical identifiers of the body with science, which examines how the social environment shapes the biological body. They provide an overview of the history of human identification and disciplines based on the identification of the physical body, such as forensic medicine and archaeology, and address some early examples of the interfaces between social thought and the body. The second chapter deals with various social categories, including gender, age, race, and socioeconomic status, and their relationship to the body. These categories reflect ideas of equality and difference, but have fluid and interlocking boundaries that overlap politically, biologically, and personally. The following chapters divide the body into different systems that make their way from the visible outer layer to the inner molecular mechanisms.
