The influence of PCR on criminal expertise

Kassya Munyse Cardoso Alves, Poliana Pinheiro Silva,Jéssyka Viana Valadares Franco, João Paulo Silva Azeredo,

Abstract

Introduction: PCR (polymerase chain reaction) is a technique of cell biology, developed and conceptualized by biochemist Kary Banks Mullis in the 80's. The repercussion and impact of PCR granted Mullis the Nobel Prize in chemistry shortly after this method had recognized for providing advances in research, especially in molecular biology. This technique brought advantages that led the genetic sequencing to several branches, among them, the area of ​​forensics. Objective: Consists of proving the importance of this method within forensic investigations, through biological materials found at the crime scene, which grants genetic analysis, comparing it later with legal applications. Proposed Methodology: It refers to an elucidative and descriptive study, elaborated through the bibliographic review, developed through databases found on digital platforms, by books, scientific articles and magazines. Results: In every crime committed, in which one person happened against another, or himself, and may even be against property, the author left evidence even if to a tiny degree at the microscopic level. Conclusion: the present study is to prove the effectiveness of the PCR technique in the elucidation of crimes, through biological samples collected for analysis, providing ease and transparency for professionals, through criminal expertise, thus obtaining relevance in the results of the cases presented. .

Keywords: PCR. Molecular biology. Forensic genetics. Criminal investigation.