FOR-T_Blog

     In criminal investigations, small and often ignored traces can reveal important truths. While fingerprints and DNA are the most commonly used identification methods, forensic science also uses other biological features that are unique to individuals. One such method is Cheiloscopy, the study of lip prints, which plays a quiet but important role in personal identification.      This blog explains the science of lip prints, their biological basis, and how they help in solving criminal cases. Defining Cheiloscopy : Beyond the Visual      The term Cheiloscopy comes from the Greek words cheilos meaning lips and skopein meaning to observe. In forensic science, it refers to the study of natural grooves and wrinkles present on the red part of the lips, called the vermilion border.      Just like fingerprints, lip print patterns are unique to every individual. Studies have shown that even  identical twins do not have the same ...

Introduction      Forensic Linguistics is the study of how words, speech and writing can provide clues in investigation of criminal as well as civil cases. It is the analysis of given evidence such as anonymous letters, suicide notes or other things like emails to determine authorship, speaker or interpretation of legal documents. The admissibility of forensic linguistic evidence in court depends on the reliability, relevance and scientific validity. Only the qualified experts and evidence with proper chain of custody are preferred. Different countries have different legal standards.      Gibbons (2001) : Forensic linguistics is the study of language in legal contexts, examining written and spoken communication to assist law enforcement, courts, and legal practitioners.   Background :      The term ‘‘forensic linguistics’’ was coined by Jan Svartvik in 1968 after analyzing the Timothy Evans case. He identified the difference...

               Depicted frequently in popular crime shows and novels, forensic science plays a crucial role in contemporary criminal investigations. This captivating discipline merges scientific precision with legal procedures to reveal the truth behind crimes. Let's explore the significance of forensic science and its contribution to the quest for justice. What is Forensic Science ?     Forensic science involves the application of scientific principles and techniques to solve crimes and support legal investigations. It encompasses a variety of disciplines, including biology, chemistry, physics, and digital technology, to analyze evidence collected from crime scenes. The goal is to provide objective, reliable, and scientifically validated information for court use. Key Techniques in Forensic Science:      DNA Analysis : DNA profiling is one of the most powerful tools in forensic science. By analyzing genetic materi...

    Genetic data is simply a means of coding DNA material. In biological terms, DNA is “an inheritance cluster of genes that are arranged in a specific system."     DNA is packed in the nucleus of a cell in humans and many animals, and in some organisms, the nucleus is in the form of a genome without a nuclear membrane. Genes are polynucleic acids split into purin and pyrimidin nitrogenous bases.     NUCLEOTIDE = NITROGENOUSEBASE + PENTOSE SUGAR + PHOSPHATE GROUP     NUCLEOSIDE = NITROGENOUS BASE + PENTOSE SUGAR     This is always synchronized as purin is linked with pyrimidin with a hydrogen bond, nitrogenous bases are connected to the 3' carbon of pentose sugar, and phosphate is in the 5' carbon position. This makes a structure called the double helix structure, discovered by scientists William and Rick. DATABASE FORMATION         This is all the introduction to DNA structure now about function—how it work...

         Poison extraction from biological material is a method of isolating harmful chemicals from living organisms or their metabolites. It is critical to stress that extracting toxins from biological material should only be done by qualified specialists in controlled surroundings like research facilities, and always with sufficient ethical considerations. Attempting to extract poisons without proper training can be extremely risky, resulting in injury to the extractor or observers. There are different methods for extraction of poisons are define below; 1) Dry-aching method: - Dry aching is very useful for organic-rich samples such as biological tissues, food products, and environmental materials. The approach accurately determines inorganic elements present in the sample by eliminating organic materials by burning. Here is a basic outline of the dry aching method: Sample preparation: - The sample is prepared by carefully drying it to remove any moisture. T...

As we all know, forensic toxicology is the field of forensic science which helps to determine that, whether there is any kind of poison or toxic substances in the biological samples (blood, urine, hairs, nails, stomach wash etc.) or not. The analysis of these poisons and toxic substances shows the role of those poisons or toxic substances in a particular crime. Toxicology is “the science of poisons.” Paracelsus said that, “all things are poison and nothing is without poison.” Poison can be harmful or even cause death and not only for humans, but also for animals and plants. There are various routes of administration of poison into the body such as ingestion, inhalation, injection etc. What is poison ? A poison is any substance (solid, liquid, gas) which, if comes into contact with a living body or any part of the living body then it impairs health or ultimately leads to death through its effects. Each agent can be harmful if acted upon in sufficient quantities by the organism. It is a...

    1. HISTORICAL OVERVIEW: Several analytical techniques are used for Toxicological screening methods which help in detecting and quantifying toxins.   A few Early screening techniques used were: 1. Colour Tests: Specific chemicals react with substances producing colours. 2. Microscopy: Detailed examination of tissues or fluids. 3. Spectroscopy: Identifying and quantifying unknown substances. 4. Flame Tests: Identifying metal ions based on the colour of flame.   Limitations faced in the early devices: 1.   They lacked sensitivity and specificity making it difficult to detect substances at low concentrations. 2. Only qualitative results were provided, quantifying a substance was difficult. 3. Standardized protocols and procedures did not exist making comparison of results difficult. 4. They were susceptible to environmental conditions and portability.   2. ADVANCEMENTS IN ANALYTICAL TECHNIQUES:   Analytical ...