Forensics and TheScientificWorld

Nick Olivier (Ed.) • 30 September 2025

Editorial: The Evolution and Impact of Forensic Science: A Reflection on DNA Profiling

At the dawn of the new millennium, according to Rowe, it's important to reflect on forensic science, a field established just over a century ago. Its roots trace back to 1887, with A. Conan Doyle's *A Study in Scarlet* popularised the importance of physical evidence, and Hans Gross’s *Handbuch für Untersuchungsrichter* outlined how various scientific fields can aid criminal investigations. Advances over the years include fingerprint analysis, forensic chemistry, and toxicology, with modern judicial systems relying more on scientific evidence than eyewitness accounts.


The most significant recent development is DNA profiling, which has drastically changed the criminal justice landscape. It allows for precise identification of suspects, narrowing possibilities from conventional tests to as low as 1 in 100 million. Techniques like polymerase chain reaction (PCR) enable analysis of small or degraded samples.


This technology promotes impartiality in forensic science and has exonerated many wrongfully convicted individuals. The FBI reports that about a third of DNA cases exclude the primary suspect. Organisations like the Innocence Project have used DNA to clear individuals of serious crimes, sparking crucial conversations about the death penalty and revealing issues of bias and incompetence among some law enforcement and forensic professionals.


Read more in the source.


Source: Rowe, Walter, Founding Editorial – Forensics and TheScientificWorld, The Scientific World Journal, 1, 731531, 4 pages, 2001. https://doi.org/10.1100/tsw.2001.299


Image: The-Scientist.com. https://cdn.the-scientist.com/assets/image/47970/03-25-forensics-banner-s.webp

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For every person the road to a career in forensics is unique. Some law enforcement officers’ love for forensics is born out of years on crime scenes. Others are born with a desire to have a career in this field and some simply stumble upon a forensics career because of their love for analysing data. For forensic technicians, it’s all about evidence collection. From reconstructing a crime scene to analysing phone records. For forensic scientists, this career stems from science. What is a forensic technician? Forensic technicians or criminalists are found both in the private sector and in law enforcement. This is a broad term that refers to a few different fields within forensics. These can be grouped under the following main categories: Forensic science: these individuals aspire to work in the Police Service's Criminal Record Centres or Forensic Science Services Division. This career path focuses specifically on the reconstruction of a crime scene, lab technicians who aspire to work with forensic biology or working to verify facts or documentation in a police investigation. Forensic biology: these technicians aim to work in either the private or public sector’s laboratories that take on forensic work. They can work either primarily with DNA, Chemistry or they can focus on forensic document examination. Both the lab technician or crime scene technicians collect crucial physical evidence to connect their findings to a victim and/or perpetrator. How to become a forensic technician in South Africa? Through Law Enforcement You can move into a career in forensics by joining the South African Police Service. Your years of experience with SAPS, combined with a forensic qualification can open the doors to become a forensic technician. To become a police officer in South Africa: 1. You can apply to SAPS either by means of becoming a police official through the South African Police Service Act or as a civilian employee. The primary difference between the civilian and the police official is that the latter works in the field rather than in administration. 2. In order to apply for either one of these positions you must pass a psychological assessment test and have at least matric (NSC). You will also need to pass a physical fitness test. 3. You can study to become a forensic technician prior or after you are employed by SAPS. Understand that terms and conditions regarding recruitment and careers applies Through a qualification: You can study to become a criminalist and then directly apply at the South African Police Service's Criminal Record Centres or Forensic Science Services Division. What to study towards forensics: 1. You will need to complete or have completed your matric with good grades in mathematics and science. 2. You can then study towards a qualification starting on NQF5, this is equivalent to a first year bachelors degree. For Forensic Science, you should have had Mathematics, Communication and Physical Science in matric. 3. Once you have completed the above, apply for the NQF 6 in Forensic Biology, you will be required to complete the Forensic Biology Elective of the NQF 5. Forensic technician salary in South Africa. Once you have completed the above mentioned steps for forensic technician in the field of forensic science you can expect an average yearly income of R127,793* depending on the years of experience that you have acquired and relevant Terms and Conditions of the potential employer. As a crime scene investigator with the above mentioned completed you can expect an average yearly income of R242,667*. As a DNA expert, with the above mentioned completed your average yearly income can be around R269,370*. The difference between a forensic technician and forensic scientist in South Africa. The primary difference between a forensic technician and scientist is the handling of evidence. Where the technician collects and documents evidence, or analysis documentation. The forensic scientist applies scientific methods (experiments) to build further on a case. This combination of science and forensics creates the forensic expert. These experts include medical examiners, pathologists and microbiologists, to name a few. Unlike the technician, the forensic scientist does not often go to a crime scene itself, but rather helps analyze collected evidence to individualize such evidence with the aim to connect it to a person. You can read more about the study path to become a forensic scientist in our previous article here . Forensic scientist salary in South Africa Forensic investigator salary in South Africa ranges around R307,075* per year. Pathologist and medical examiners can earn over a million rand per year*. Forensic analysts: can earn around the R282,299* mark yearly depending on their experience level. We are seeing more and more forensic disciplines emerging, which means that job opportunities in this field are expanding. Thanks to the technologically advanced times we live in today, we are seeing better data and analysis filtering into forensic fields. It’s an exciting time to explore a career in forensics! Explore our qualifications to help you towards a career in this field. Resources: South Africa Police Recruitment - www.how2become.com Forensic salaries South Africa - www.salaryexpert.com Paycale - Payscale.com/research/ZA/Skill=Forensics/Salary Career Opportunities in Forensic Science - By Susan Echaore-McDavid, Richard A. McDavid: ISBN-13: 978-0-8160-6156-3 * Salaries referenced to in this article are indicative only and subject to change