{"id":30058,"date":"2026-08-15T05:26:06","date_gmt":"2026-08-15T05:26:06","guid":{"rendered":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/?p=30058"},"modified":"2026-08-15T05:29:15","modified_gmt":"2026-08-15T05:29:15","slug":"dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation","status":"publish","type":"post","link":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/","title":{"rendered":"DNA Fingerprinting: Molecular Identification and Its Role in Criminal Investigation"},"content":{"rendered":"\n<h1 id=\"h-dna-fingerprinting-in-police-investigation\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DNA_Fingerprinting_in_Police_Investigation\"><\/span>DNA Fingerprinting in Police Investigation<span class=\"ez-toc-section-end\"><\/span><\/h1>\n\n\n\n<h2 id=\"h-introduction\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNA fingerprinting is one of the most important scientific techniques used in modern criminal investigations. It helps police officers identify suspects, victims, missing persons, and unknown dead bodies with a very high degree of accuracy. Because every person&#8217;s DNA is unique (except identical twins), DNA fingerprinting has become a reliable and powerful form of forensic evidence.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0c0c0c;color:#0c0c0c\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #0c0c0c;color:#0c0c0c\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#DNA_Fingerprinting_in_Police_Investigation\" >DNA Fingerprinting in Police Investigation<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#What_Is_DNA\" >What Is DNA?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#What_Is_DNA_Fingerprinting\" >What Is DNA Fingerprinting?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#History_of_DNA_Fingerprinting\" >History of DNA Fingerprinting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Sources_of_DNA_Evidence_at_a_Crime_Scene\" >Sources of DNA Evidence at a Crime Scene<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Steps_in_DNA_Fingerprinting\" >Steps in DNA Fingerprinting<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#61_Collection_of_Samples\" >6.1. Collection of Samples<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#62_Extraction_of_DNA\" >6.2. Extraction of DNA<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#63_DNA_Analysis\" >6.3. DNA Analysis<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#64_Preparation_of_DNA_Profile\" >6.4. Preparation of DNA Profile<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#65_Comparison\" >6.5. Comparison<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#66_Interpretation_of_Results\" >6.6. Interpretation of Results<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Uses_of_DNA_Fingerprinting_in_Police_Investigation\" >Uses of DNA Fingerprinting in Police Investigation<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#71_Identification_of_Criminals\" >7.1. Identification of Criminals<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#72_Identification_of_Victims\" >7.2. Identification of Victims<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#73_Identification_of_Unknown_Dead_Bodies\" >7.3. Identification of Unknown Dead Bodies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#74_Sexual_Offence_Cases\" >7.4. Sexual Offence Cases<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#75_Missing_Person_Investigations\" >7.5. Missing Person Investigations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#76_Parentage_and_Family_Relationship_Cases\" >7.6. Parentage and Family Relationship Cases<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#77_Disaster_Victim_Identification\" >7.7. Disaster Victim Identification<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Advantages_of_DNA_Fingerprinting\" >Advantages of DNA Fingerprinting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Importance_for_Police_Officers\" >Importance for Police Officers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Precautions_While_Handling_DNA_Evidence\" >Precautions While Handling DNA Evidence<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Limitations_of_DNA_Fingerprinting\" >Limitations of DNA Fingerprinting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Evidentiary_Value_in_Court_and_Important_Case_Laws\" >Evidentiary Value in Court and Important Case Laws<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<h2 id=\"h-what-is-dna\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_DNA\"><\/span>What Is DNA?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNA stands for Deoxyribonucleic Acid. It is the genetic material present in almost every cell of the human body. DNA carries information about a person&#8217;s physical characteristics and biological identity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DNA can be found in:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Blood<\/li>\n\n\n\n<li>Saliva<\/li>\n\n\n\n<li>Hair roots<\/li>\n\n\n\n<li>Semen<\/li>\n\n\n\n<li>Skin cells<\/li>\n\n\n\n<li>Bones<\/li>\n\n\n\n<li>Teeth<\/li>\n\n\n\n<li>Nails<\/li>\n\n\n\n<li>Body tissues<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Since DNA remains the same throughout a person&#8217;s life, it can be used for identification even many years after a crime has occurred.<\/p>\n\n\n\n<h2 id=\"h-what-is-dna-fingerprinting\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_DNA_Fingerprinting\"><\/span>What Is DNA Fingerprinting?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNA fingerprinting is a scientific method used to identify a person by examining specific regions of their DNA. Just as every person has unique fingerprints, every individual has a unique DNA profile.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In DNA fingerprinting, scientists compare DNA samples collected from a crime scene with DNA samples obtained from suspects, victims, or relatives. If the DNA profiles match, it provides strong evidence that the sample came from the same person.<\/p>\n\n\n\n<h2 id=\"h-history-of-dna-fingerprinting\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"History_of_DNA_Fingerprinting\"><\/span>History of DNA Fingerprinting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNA fingerprinting was developed in 1984 by Sir Alec Jeffreys, a British geneticist. Since then, the technique has revolutionized forensic science and criminal investigations around the world.<\/p>\n\n\n\n<h2 id=\"h-sources-of-dna-evidence-at-a-crime-scene\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sources_of_DNA_Evidence_at_a_Crime_Scene\"><\/span>Sources of DNA Evidence at a Crime Scene<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Police officers may recover DNA evidence from:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Blood stains<\/li>\n\n\n\n<li>Cigarette butts<\/li>\n\n\n\n<li>Drinking glasses<\/li>\n\n\n\n<li>Bottles<\/li>\n\n\n\n<li>Hair with roots<\/li>\n\n\n\n<li>Used tissues<\/li>\n\n\n\n<li>Clothing<\/li>\n\n\n\n<li>Weapons<\/li>\n\n\n\n<li>Bite marks<\/li>\n\n\n\n<li>Fingernail scrapings<\/li>\n\n\n\n<li>Semen stains<\/li>\n\n\n\n<li>Saliva on envelopes or stamps<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Even a very small amount of biological material may contain enough DNA for examination.<\/p>\n\n\n\n<h2 id=\"h-steps-in-dna-fingerprinting\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Steps_in_DNA_Fingerprinting\"><\/span>Steps in DNA Fingerprinting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 id=\"h-6-1-collection-of-samples\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"61_Collection_of_Samples\"><\/span>6.1. Collection of Samples<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Biological evidence is collected from the crime scene, victim, suspect, or other relevant persons.<\/p>\n\n\n\n<h3 id=\"h-6-2-extraction-of-dna\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"62_Extraction_of_DNA\"><\/span>6.2. Extraction of DNA<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Scientists extract DNA from the collected biological material.<\/p>\n\n\n\n<h3 id=\"h-6-3-dna-analysis\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"63_DNA_Analysis\"><\/span>6.3. DNA Analysis<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Special laboratory techniques are used to study specific DNA regions that vary among individuals.<\/p>\n\n\n\n<h3 id=\"h-6-4-preparation-of-dna-profile\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"64_Preparation_of_DNA_Profile\"><\/span>6.4. Preparation of DNA Profile<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A DNA profile is generated for each sample.<\/p>\n\n\n\n<h3 id=\"h-6-5-comparison\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"65_Comparison\"><\/span>6.5. Comparison<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The DNA profile from the crime scene is compared with known DNA samples.<\/p>\n\n\n\n<h3 id=\"h-6-6-interpretation-of-results\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"66_Interpretation_of_Results\"><\/span>6.6. Interpretation of Results<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Experts determine whether the DNA profiles match or differ.<\/p>\n\n\n\n<h2 id=\"h-uses-of-dna-fingerprinting-in-police-investigation\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Uses_of_DNA_Fingerprinting_in_Police_Investigation\"><\/span>Uses of DNA Fingerprinting in Police Investigation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 id=\"h-7-1-identification-of-criminals\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"71_Identification_of_Criminals\"><\/span>7.1. Identification of Criminals<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DNA found at a crime scene can connect a suspect to the offense.<\/p>\n\n\n\n<h3 id=\"h-7-2-identification-of-victims\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"72_Identification_of_Victims\"><\/span>7.2. Identification of Victims<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DNA helps identify victims in murder cases, accidents, fires, floods, and other disasters.<\/p>\n\n\n\n<h3 id=\"h-7-3-identification-of-unknown-dead-bodies\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"73_Identification_of_Unknown_Dead_Bodies\"><\/span>7.3. Identification of Unknown Dead Bodies<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When a body cannot be identified visually, DNA comparison with relatives can establish identity.<\/p>\n\n\n\n<h3 id=\"h-7-4-sexual-offence-cases\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"74_Sexual_Offence_Cases\"><\/span>7.4. Sexual Offence Cases<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DNA evidence obtained from semen, saliva, blood, or skin cells can help identify offenders.<\/p>\n\n\n\n<h3 id=\"h-7-5-missing-person-investigations\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"75_Missing_Person_Investigations\"><\/span>7.5. Missing Person Investigations<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DNA comparison can assist in locating and identifying missing persons.<\/p>\n\n\n\n<h3 id=\"h-7-6-parentage-and-family-relationship-cases\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"76_Parentage_and_Family_Relationship_Cases\"><\/span>7.6. Parentage and Family Relationship Cases<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DNA can establish biological relationships such as paternity and maternity.<\/p>\n\n\n\n<h3 id=\"h-7-7-disaster-victim-identification\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"77_Disaster_Victim_Identification\"><\/span>7.7. Disaster Victim Identification<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DNA is widely used after natural disasters, aircraft crashes, explosions, and mass casualty incidents.<\/p>\n\n\n\n<h2 id=\"h-advantages-of-dna-fingerprinting\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advantages_of_DNA_Fingerprinting\"><\/span>Advantages of DNA Fingerprinting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Extremely accurate and reliable.<\/li>\n\n\n\n<li>Unique for each individual (except identical twins).<\/li>\n\n\n\n<li>Can identify persons from very small samples.<\/li>\n\n\n\n<li>Useful even when evidence is old or partially degraded.<\/li>\n\n\n\n<li>Helps solve cold cases.<\/li>\n\n\n\n<li>Can both implicate guilty persons and exonerate innocent persons.<\/li>\n\n\n\n<li>Widely accepted by courts as scientific evidence.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-importance-for-police-officers\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Importance_for_Police_Officers\"><\/span>Importance for Police Officers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Police officers play a critical role in ensuring successful DNA analysis. The value of DNA evidence depends largely on proper collection, preservation, and handling at the crime scene.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Police officers should:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Protect the crime scene immediately.<\/li>\n\n\n\n<li>Wear gloves and protective equipment.<\/li>\n\n\n\n<li>Avoid touching biological evidence directly.<\/li>\n\n\n\n<li>Use clean tools for collection.<\/li>\n\n\n\n<li>Package each sample separately.<\/li>\n\n\n\n<li>Label and seal all exhibits properly.<\/li>\n\n\n\n<li>Maintain the chain of custody.<\/li>\n\n\n\n<li>Send exhibits promptly to the forensic laboratory.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-precautions-while-handling-dna-evidence\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Precautions_While_Handling_DNA_Evidence\"><\/span>Precautions While Handling DNA Evidence<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prevent contamination from investigators, witnesses, or other sources.<\/li>\n\n\n\n<li>Do not mix different samples.<\/li>\n\n\n\n<li>Allow wet biological samples to dry before packaging.<\/li>\n\n\n\n<li>Use paper envelopes or bags where appropriate.<\/li>\n\n\n\n<li>Avoid excessive heat, moisture, and sunlight.<\/li>\n\n\n\n<li>Record complete details of collection and handling.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-limitations-of-dna-fingerprinting\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Limitations_of_DNA_Fingerprinting\"><\/span>Limitations of DNA Fingerprinting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Although highly reliable, DNA fingerprinting has certain limitations:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poorly preserved samples may yield insufficient DNA.<\/li>\n\n\n\n<li>Contamination can affect results.<\/li>\n\n\n\n<li>Analysis requires specialized laboratories and trained experts.<\/li>\n\n\n\n<li>Identical twins generally have the same DNA profile.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"h-evidentiary-value-in-court-and-important-case-laws\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Evidentiary_Value_in_Court_and_Important_Case_Laws\"><\/span>Evidentiary Value in Court and Important Case Laws<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNA evidence is considered one of the strongest forms of scientific evidence. When properly collected, preserved, and analyzed, it can provide powerful support for criminal investigations and judicial proceedings. Courts often rely on DNA evidence to establish identity and connections between suspects, victims, and crime scenes.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Case<\/th><th>Year<\/th><th>Jurisdiction<\/th><th>Principle Established<\/th><\/tr><\/thead><tbody><tr><td>Andrews v. State (1987) (Florida District Court of Appeal)<\/td><td>1987<\/td><td>USA<\/td><td>First appellate decision in the U.S. to affirm a criminal conviction based on DNA profiling.<\/td><\/tr><tr><td>R v. Pitchfork<\/td><td>1988<\/td><td>UK<\/td><td>First criminal conviction based on DNA profiling; demonstrated DNA\u2019s power in linking suspects to crime scenes.<\/td><\/tr><tr><td>Kunhiraman v. Manoj (1991 (2) KLT 190)<\/td><td>1991<\/td><td>India<\/td><td>First judicial acceptance of DNA evidence in India.<\/td><\/tr><tr><td>Goutam Kundu v. State of West Bengal<\/td><td>1993<\/td><td>India<\/td><td>DNA\/blood tests cannot be ordered routinely; privacy and legitimacy concerns must be respected.<\/td><\/tr><tr><td>Dipanwita Roy v. Ronobroto Roy<\/td><td>2014<\/td><td>India<\/td><td>DNA testing is permitted when paternity is the central issue and no alternative evidence suffices.<\/td><\/tr><tr><td>Aparna Ajinkya Firodia v. Ajinkya Arun Firodia<\/td><td>2021<\/td><td>India<\/td><td>Reiterated that DNA tests must be ordered sparingly, only in exceptional circumstances.<\/td><\/tr><tr><td>Chaturbhuj Pradhan v. Amar Pradhan<\/td><td>2026<\/td><td>India<\/td><td>Upheld DNA testing to resolve a paternity dispute, balancing privacy rights with the child\u2019s right to know parentage.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"h-conclusion\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNA fingerprinting has transformed modern policing and forensic science. It enables investigators to identify suspects, victims, missing persons, and unknown bodies with remarkable accuracy. For police officers, understanding the importance of DNA evidence and following correct procedures for its collection and preservation are essential. Proper handling of DNA evidence can make the difference between solving a crime and losing crucial evidence. Therefore, DNA fingerprinting remains one of the most valuable scientific tools available to law enforcement agencies in the pursuit of justice.<\/p>\n\n\n\n<ul class=\"wp-block-yoast-seo-related-links yoast-seo-related-links\">\n<li><a href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-testing-and-its-role-in-todays-legal-system\/\">DNA Testing and Its Role in Today\u2019s Legal System<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/degraded-dna-the-limits-of-detection\/\">Degraded DNA: The Limits of Detection<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/fingerprints-in-forensic-science-and-law-from-immutable-identity-to-digital-evidence\/\">Fingerprints in Forensic Science and Law: From Immutable Identity to Digital Evidence<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/introduction-to-forensic-science-importance-scope-and-horizons-in-criminal-investigation\/\">Introduction to Forensic Science: Importance, Scope, and Horizons in Criminal Investigation<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/crime-scene-examination-principles-of-search-preservation-and-evidence-collection\/\">Crime Scene Examination: Principles of Search, Preservation, and Evidence Collection<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>DNA Fingerprinting in Police Investigation Introduction DNA fingerprinting is one of the most important scientific techniques used in modern criminal investigations. It helps police officers identify suspects, victims, missing persons, and unknown dead bodies with a very high degree of accuracy. Because every person&#8217;s DNA is unique (except identical twins), DNA fingerprinting has become a<\/p>\n","protected":false},"author":49,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"two_page_speed":[],"_jetpack_memberships_contains_paid_content":false,"_joinchat":[],"footnotes":""},"categories":[87],"tags":[921],"class_list":["post-30058","post","type-post","status-publish","format-standard","category-medico-legal","tag-medico-legal"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>DNA Fingerprinting: Molecular Identification and Its Role in Criminal Investigation - Legal Service India - Articles<\/title>\n<meta name=\"description\" content=\"Learn how DNA fingerprinting helps police identify suspects, victims and missing persons and strengthens forensic evidence in criminal investigations.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DNA Fingerprinting: Molecular Identification and Its Role in Criminal Investigation\" \/>\n<meta property=\"og:description\" content=\"Learn how DNA fingerprinting helps police identify suspects, victims and missing persons and strengthens forensic evidence in criminal investigations.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.legalserviceindia.com\/Legal-Articles\/dna-fingerprinting-molecular-identification-and-its-role-in-criminal-investigation\/\" \/>\n<meta property=\"og:site_name\" content=\"Legal Service India - Articles\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/legalservicesind\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-15T05:26:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-15T05:29:15+00:00\" \/>\n<meta name=\"author\" content=\"Md. 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Imran Wahab\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/wp-content\\\/uploads\\\/avatars\\\/49\\\/1777837060-bpfull.jpg\",\"url\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/wp-content\\\/uploads\\\/avatars\\\/49\\\/1777837060-bpfull.jpg\",\"contentUrl\":\"https:\\\/\\\/www.legalserviceindia.com\\\/Legal-Articles\\\/wp-content\\\/uploads\\\/avatars\\\/49\\\/1777837060-bpfull.jpg\",\"caption\":\"Md. Imran Wahab\"},\"description\":\"Md. Imran Wahab, a distinguished 2004-batch Indian Police Service officer, has dedicated over 32 years to public service, holding various senior managerial positions within the West Bengal Police force. His career has spanned diverse roles across different districts, including Kolkata Police, serving as DCP, 5th Battalion, Kolkata Armed Police and DCP (Port Division), for approximately 4 years. He served in Barrackpore Police Commissionerate, holding the positions of DCP (Special Branch) and DCP (Traffic) for over 4 years. He was posted in the districts of Dakshin Dinajpur and Nadia as Additional SP. At the sub-divisional level, he has worked as SDPOs of Gangarampur, Raghunathpur and Kalna sub-divisions of West Bengal. His tenure as Special IG and subsequently as IGP of Correctional Services, West Bengal, for over 4 years, saw him deeply engaged in improving the prison and correctional system. He visited numerous correctional homes across West Bengal, interacting with inmates, both male and female, including children residing with their incarcerated mothers. His outreach extended to correctional homes in Assam, Bihar, and Tripura. This hands-on approach provided him with invaluable insights into the workings of prisons and the complexities of the prisoner psyche. Beyond his operational roles, Md. Imran Wahab possesses a strong academic background, holding B.Sc., M.A., L.L.B., and M.B.A. degrees. He has also completed Post Graduate Diplomas in Human Rights, Project Management, Corporate Management, Computer Application, Public Administration, Medical Law, Disaster Management, Fire Safety &amp; Hazards Management and Psychology. He has attended Indian government sponsored specialized training in police and management matters in SVPNPA, Hyderabad, IIM, Ahmedabad and Singapore. He is the author of the books 'Police Investigation &amp; Allied Matters' and 'Alternative Dispute Resolution: Evolving Trends and Innovations' demonstrating his commitment to knowledge sharing within the law enforcement field. As an observer for the Election Commission of India, he has gained firsthand experience in conducting assembly elections and bye-elections in Uttar Pradesh, Rajasthan, Assam, Bihar, and Tripura (twice). This exposure has given him a deep understanding of election management and the Election Commission's operations. He has also served as Chairman and as a member of various recruitment boards for the selection of police personnel in Kolkata Police and West Bengal Police. Md. Imran Wahab's interests extend beyond law enforcement to include law, politics, international affairs, prison management, and business management. He has authored over 1000 articles on these diverse topics, reflecting his intellectual curiosity and desire to contribute to public discourse. 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Imran Wahab","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/avatars\/49\/1777837060-bpfull.jpg","url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/avatars\/49\/1777837060-bpfull.jpg","contentUrl":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-content\/uploads\/avatars\/49\/1777837060-bpfull.jpg","caption":"Md. Imran Wahab"},"description":"Md. Imran Wahab, a distinguished 2004-batch Indian Police Service officer, has dedicated over 32 years to public service, holding various senior managerial positions within the West Bengal Police force. His career has spanned diverse roles across different districts, including Kolkata Police, serving as DCP, 5th Battalion, Kolkata Armed Police and DCP (Port Division), for approximately 4 years. He served in Barrackpore Police Commissionerate, holding the positions of DCP (Special Branch) and DCP (Traffic) for over 4 years. He was posted in the districts of Dakshin Dinajpur and Nadia as Additional SP. At the sub-divisional level, he has worked as SDPOs of Gangarampur, Raghunathpur and Kalna sub-divisions of West Bengal. His tenure as Special IG and subsequently as IGP of Correctional Services, West Bengal, for over 4 years, saw him deeply engaged in improving the prison and correctional system. He visited numerous correctional homes across West Bengal, interacting with inmates, both male and female, including children residing with their incarcerated mothers. His outreach extended to correctional homes in Assam, Bihar, and Tripura. This hands-on approach provided him with invaluable insights into the workings of prisons and the complexities of the prisoner psyche. Beyond his operational roles, Md. Imran Wahab possesses a strong academic background, holding B.Sc., M.A., L.L.B., and M.B.A. degrees. He has also completed Post Graduate Diplomas in Human Rights, Project Management, Corporate Management, Computer Application, Public Administration, Medical Law, Disaster Management, Fire Safety &amp; Hazards Management and Psychology. He has attended Indian government sponsored specialized training in police and management matters in SVPNPA, Hyderabad, IIM, Ahmedabad and Singapore. He is the author of the books 'Police Investigation &amp; Allied Matters' and 'Alternative Dispute Resolution: Evolving Trends and Innovations' demonstrating his commitment to knowledge sharing within the law enforcement field. As an observer for the Election Commission of India, he has gained firsthand experience in conducting assembly elections and bye-elections in Uttar Pradesh, Rajasthan, Assam, Bihar, and Tripura (twice). This exposure has given him a deep understanding of election management and the Election Commission's operations. He has also served as Chairman and as a member of various recruitment boards for the selection of police personnel in Kolkata Police and West Bengal Police. Md. Imran Wahab's interests extend beyond law enforcement to include law, politics, international affairs, prison management, and business management. He has authored over 1000 articles on these diverse topics, reflecting his intellectual curiosity and desire to contribute to public discourse. He is also a research scholar in law and has contributed articles to the Indian Police Journal, National Crime Record Bureau Journal, SVP National Police Academy Journal, and International Journal for Multidisciplinary Research etc. Currently, he serves as IGP, Provisioning, West Bengal.","url":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/author\/md-imranwahab\/"}]}},"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/posts\/30058","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/users\/49"}],"replies":[{"embeddable":true,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/comments?post=30058"}],"version-history":[{"count":2,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/posts\/30058\/revisions"}],"predecessor-version":[{"id":30308,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/posts\/30058\/revisions\/30308"}],"wp:attachment":[{"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/media?parent=30058"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/categories?post=30058"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.legalserviceindia.com\/Legal-Articles\/wp-json\/wp\/v2\/tags?post=30058"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}