"A report from National Commission on the Future of DNA Evidence"--Cover.

Matching DNA samples from crime scenes and suspects is rapidly becoming a key source of evidence for use in our justice system. DNA Technology in Forensic Science offers recommendations for resolving crucial questions that are emerging as DNA typing becomes more widespread. The volume addresses key issues: Quality and reliability in DNA typing, including the introduction of new technologies, problems of standardization, and approaches to certification. DNA typing in the courtroom, including issues of population genetics, levels of understanding among judges and juries, and admissibility. Societal issues, such as privacy of DNA data, storage of samples and data, and the rights of defendants to quality testing technology. Combining this original volume with the new update-The Evaluation of Forensic DNA Evidence-provides the complete, up-to-date picture of this highly important and visible topic. This volume offers important guidance to anyone working with this emerging law enforcement tool: policymakers, specialists in criminal law, forensic scientists, geneticists, researchers, faculty, and students.

The principal assignment given to the Research and Development Working Group was to identify the technical advances in the forthcoming decade and to assess the expected impact of these on forensic DNA (deoxyribonucleic acid) analysis. Progress in forensic analysis was slow until recently, but since 1985 more powerful techniques have increased explosively. The first useful marker system, the ABO blood groups, was discovered in 1900. The second, the MN groups, came a quarter century later. By the 1960s, there were 17 blood group systems known, but not all were useful for forensics, and in the 1970s a few serum proteins and enzymes were added. By the 1980s, some 100 protein polymorphisms were known but most were not generally useful for forensics. The year 1985 brought a major breakthrough. VNTRs (variable number of tandem repeats) showed much greater variability among people than previous systems and immediately began to be used for forensic studies. They are still used, but are rapidly being replaced by STRs (short tandem repeats). We can also expect improvements in collection and purification techniques. Automation will make the process more efficient and rapid, and we expect interpretative software for analysis of complex problems, such as mixtures. There also is progress toward miniaturization, using a combination of chip technology and molecular genetics. Portable, handheld systems are now working in laboratory experiments; how soon these will be available for routine use is not clear. We also expect an increasing amount of re-examination of cases in which the conviction was based on evidence other than DNA. Greater automation and higher throughput approaches will help reduce the backlog. Formats that can analyze multiple STR loci in miniaturized, mobile instruments are promised and should be available by this time. We also expect improved sampling and storage techniques. Research in the human genome and clinical research will produce many more markers, some of which will be used to supplement the existing procedures. We also expect integration of computers and internet with analytical techniques to permit direct transmission of test data between laboratories. There may be some transition to new technologies, mainly to supplement the standard STRs. SNPs will be widely used in medical and agricultural research, so there will be many opportunities to carry these over for forensic purposes. Within 10 years we expect portable, miniaturized instrumentation that will provide analysis at the crime scene with computer-linked remote analysis. Although this report looks to the future, we emphasize that current state-of-the-art DNA typing is such that the technology and statistical methods are accurate and reproducible. STRs have proved to be very satisfactory for forensic use and are being rapidly adopted by forensic laboratories. The difficulty and expense of changing well-established and reliable procedures will inhibit changes to other systems. For this reason, we believe that STRs will be the predominant procedure during the next decade. Methods of automation, increasing the speed and output and reliability of STR methods, will continue. In particular we expect that portable, miniature chips will make possible the analysis of DNA directly at the crime scene. Techniques for handling minute amounts of DNA or DNA that is badly degraded will become much better. In particular, mitochondrial DNA will probably play an increasing role in such difficult cases. Databases of DNA profiles of convicted felons will be extensive and coordinated throughout the States. International comparisons will be feasible and increasingly common. In the future, it is likely that an increasing number of suspects will be identified by database searches. The statistical interpretation is difficult, particularly if future databases include representatives of the population at large rather than convicted felons.

In 1992 the National Research Council issued DNA Technology in Forensic Science, a book that documented the state of the art in this emerging field. Recently, this volume was brought to worldwide attention in the murder trial of celebrity O. J. Simpson. The Evaluation of Forensic DNA Evidence reports on developments in population genetics and statistics since the original volume was published. The committee comments on statements in the original book that proved controversial or that have been misapplied in the courts. This volume offers recommendations for handling DNA samples, performing calculations, and other aspects of using DNA as a forensic toolâ€"modifying some recommendations presented in the 1992 volume. The update addresses two major areas: Determination of DNA profiles. The committee considers how laboratory errors (particularly false matches) can arise, how errors might be reduced, and how to take into account the fact that the error rate can never be reduced to zero. Interpretation of a finding that the DNA profile of a suspect or victim matches the evidence DNA. The committee addresses controversies in population genetics, exploring the problems that arise from the mixture of groups and subgroups in the American population and how this substructure can be accounted for in calculating frequencies. This volume examines statistical issues in interpreting frequencies as probabilities, including adjustments when a suspect is found through a database search. The committee includes a detailed discussion of what its recommendations would mean in the courtroom, with numerous case citations. By resolving several remaining issues in the evaluation of this increasingly important area of forensic evidence, this technical update will be important to forensic scientists and population geneticistsâ€"and helpful to attorneys, judges, and others who need to understand DNA and the law. Anyone working in laboratories and in the courts or anyone studying this issue should own this book.

Fundamentals of Forensic DNA Typing is written with a broad viewpoint. It examines the methods of current forensic DNA typing, focusing on short tandem repeats (STRs). It encompasses current forensic DNA analysis methods, as well as biology, technology and genetic interpretation. This book reviews the methods of forensic DNA testing used in the first two decades since early 1980’s, and it offers perspectives on future trends in this field, including new genetic markers and new technologies. Furthermore, it explains the process of DNA testing from collection of samples through DNA extraction, DNA quantitation, DNA amplification, and statistical interpretation. The book also discusses DNA databases, which play an important role in law enforcement investigations. In addition, there is a discussion about ethical concerns in retaining DNA profiles and the issues involved when people use a database to search for close relatives. Students of forensic DNA analysis, forensic scientists, and members of the law enforcement and legal professions who want to know more about STR typing will find this book invaluable. Includes a glossary with over 400 terms for quick reference of unfamiliar terms as well as an acronym guide to decipher the DNA dialect Continues in the style of Forensic DNA Typing, 2e, with high-profile cases addressed in D.N.A.Boxes-- "Data, Notes & Applications" sections throughout Ancillaries include: instructor manual Web site, with tailored set of 1000+ PowerPoint slides (including figures), links to online training websites and a test bank with key

Forensic DNA Analysis: Technological Development and Innovative Applications provides a fascinating overview of new and innovative technologies and current applications in forensic genetics. Edited by two forensic experts with many years of forensic crime experience with the Italian police and with prestigious academic universities, the volume takes an interdisciplinary perspective, the volume presents an introduction to genome polymorphisms, discusses, forensic genetic markers, presents a variety of new methods and techniques in forensic genetics, and looks at a selection of new technological innovations and inventions now available from commercial vendors. The book is an important resource for scientists, researchers, and other experts in the field who will find it of interest for its exhaustive discussion of the most important technological innovations in forensic genetics. For those newer to the field, the volume will be an invaluable reference guide to the forensic world.