DNA Fingerprinting - A New Innovation in Forensic Science/Crime investigation

DNA Fingerprinting

A New Innovation in Forensic Science/Crime investigation

                                                                        

Soujanya A Pasumarthi

Department of Biotechnology, Koneru Lakshimah University, India.

Contact: soujanyapasumarthi@gmail.com

              

ABSTRACT 

DNA Fingerprinting, method of identification that compares fragments of deoxyribonucleic acid (DNA) it is sometimes called DNA typing. DNA is the genetic material found within the cell nuclei of all living things. In mammals the strands of DNA are grouped into structures called chromosomes. With the exception of identical twins, the complete DNA of each individual is unique. A DNA fingerprint is constructed by first extracting a DNA sample from body tissue or fluid such as hair, blood, or saliva. The sample is then segmented using enzymes, and the segments are arranged by size using a process called electrophoresis. The segments are marked with probes and exposed on X-ray film, where they form a characteristic pattern of black bars—the DNA fingerprint. If the DNA fingerprints produced from two different samples match, the two samples probably came from the same person.

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