Forensics - Notes on New Technologies

Single-Nucleotide Polymorphisms (SNPs) for Human Identification An Emerging Forensic Tool

Leave a Comment / Forensics / By Saranya Krishnan

Genetic Typing is a powerful forensic tool used for investigating criminal and paternity cases. Current methods for DNA profiling reduces sample consumption, multiple manipulation procedures, reduce the processing time, and also amplifies 16 different loci through multiplexing. DNA Typing increases the power of discrimination in the identification of profiles. Current methods are Polymerase Chain Reaction …

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Rapid DNA analysis

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Rapid DNA or Rapid DNA Analysis develops a hands-free automated DNA profile within 2 hours from a reference buccal swab without human intervention. The FBI’s rapid DNA process is an effort to establish a CODIS profile by using FBI approved instruments integrating CODIS structure to solve crimes. Rapid DNA Analysis is also called the DNA …

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Face Similarity Linkage

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A Novel Biometric approach to sexually motivated serial killer victims – Face Similarity Linkage This study focus on the sexual motivation of serial killers. There are cases without any Forensic evidence available from the crime scene. The appearances of victims could be a factor that the serial killers consider before committing a crime. Biometric approaches …

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Mitochondrial DNA Analysis

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Mitochondria is a double-layered membrane-bound organelle found in eukaryotic organisms. The organelle is also known as a powerhouse since it generates most of the cell’s adenosine triphosphate supply as an energy source. DNA evidence samples that might be too little or degraded for Nuclear DNA analysis or miniSTR analysis. Mitochondrial DNA is inherited from one …

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Forensic and Clinical issues in Alcohol analysis

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Alcohol analysis and Forensic issues Ethyl alcohol (Ethanol ) is the commonly used oldest drug consumed by a human for many years. Ethanol is a volatile liquid soluble in water and has a characteristic taste. Alcohols are a group of organic chemicals and have a hydroxyl group attached to the hydrocarbon chain of the molecule. …

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Maryland vs King Forensic Case-1

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MARYLAND, Petitioner v. Alonzo Jay KING, Jr. FORENSIC CASE In 2003, a man broke into a woman’s house with his face concealed, armed with a gun, and raped her. The police were unable to find the victim but were able to get the assailant’s DNA from the victim. Later in 2009, Alonzo king was …

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Blue Dress of Lewinsky and Forensic Method to Detect Semen Stain

Leave a Comment / Forensics / By Saranya Krishnan

Monica Lewinsky blue dress In 1988, independent counsel Kenneth Star was investigating allegations that then the US president William Jefferson Clinton had a sexual relationship with white house intern Monica Lewinsky. President Clinton denied the allegations publicly since there was no evidence at that time. Monica Lewinsky blue dress was bought into FBI Laboratory …

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Historical Methods of DNA Typing

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Forensic DNA Testing evolved during the past few years from single-locus Restriction Fragment Length Polymorphism (RFLP) reaction to polymerase chain reaction (PCR). The processes reduced the time frame which was 6 to 8 weeks to a few hours now. There are various DNA markers and they have been divided into four different quadrants depending upon the power …

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Future Trends in Forensic Biology

Leave a Comment / Forensics / By Saranya Krishnan

Forensic Biology has been expanded today with various molecular biology discoveries and technological advances. Numerous methods adopted by forensic laboratories include Polymerase Chain Reaction, Fragment Analysis, Software systems, and automatic liquid handling methods. Progression of Sanger sequencing, Next Generation sequencing, Mitochondrial analysis is the widely accepted technologies and tools for solving criminal cases. Beyond Fingerprint …

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Phenol chloroform Extraction

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Phenol Chloroform Extraction is a method used for extracting DNA from blood stains and liquid blood. Bloodstains or liquid blood are placed in a centrifuge tube. The stain extraction buffer (salts, detergents, buffer,10mm tris,100 mm NaCl, 39Mm Dithioreitol (DTT) ,10 Mm EDTA, 2% SDS (sodium dodecyl sulfate) is added. Salts and detergents help solubilize cell …

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