DNA forensics

DNA forensics

uses of DNA evidence in FORENSIC investigation. Examples of uses include: identification of potential suspects, by determining whether there is a match between DNA found at a crime scene and the suspect; identification of crime and catastrophe victims; establishment of paternity relationships; detection of BACTERIA/other organisms in water, soil, food and other samples. DNA typing or profiling (see DNA FINGERPRINTING) is employed for identification/comparative purposes, by analysis of DNA sequences unique to the species/organism. Identification within species is more difficult than between species, but should be facilitated by GENOMICS. Whole genome sequence information should allow precise identification of an individual.

Sources of DNA for human identification include BLOOD, SEMEN, tissues, hair roots, SALIVA and URINE. POLYMERASE CHAIN REACTION is used to amplify the DNA in the samples for subsequent analysis. DNA typing exploits polymorphic loci (see GENETIC POLYMORPHISM), for example VTNRs (see MINISATELLITE DNA) and STRs, in the human genome. A number of DNA regions, that vary from person to person, are scanned to create a DNA profile. There is an extremely small chance that another individual will have the same DNA profile. Anomalous results may arise due, for example, to breakdown of the original structure of the DNA in the sample, or to contamination.

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Where law machinery, all over the world is increasingly relying on DNA forensics to solve crime, the pace in India has been slow.
Furious, the woman plucked the empty bottle from the trash bin and took it to the police station, where she asked investigators to carry out costly DNA forensics tests to catch the offending roommate.
According to him, the entire cost of management and treatment of the surviving victims and DNA forensics for the dead and their families would be borne by the state government.
"This is really tough," said Malia Fullerton, an ethicist at the University of Washington who studies DNA forensics. "He was a horrible man and it is good that he was identified, but does the end justify the means?"
DNA forensics laboratory is equipped with state of art technology and expert staff to cater to needs of DNA Testing in India.
At least 12 people were buried yesterday, but other funerals are delayed as DNA forensics tests will be needed to identify body parts.
The New DNA Forensics Laboratory is the first Government approved private Lab in India which started providing DNA testing services to all.
(9) DNA forensics allow law enforcement to have a forceful impact on criminals by effectively determining whether a person has ever been involved in any previously unsolved crime with the simple click of a mouse.
"But however much progress is made in DNA forensics, we can only work with the samples of evidence found in 1888.
DNA forensics is far from infallible despite its public mystique.
The PLEX-ID analyser is capable of running both mtDNA and nuclear DNA forensics assays in a single, fully automated run.