About The Author

John Marshall Butler grew up in the Midwest and enjoying science and law decided to pursue a career in forensic science at an early age. After completing an undergraduate education at Brigham Young University in chemistry, he moved east to pursue his graduate studies at the University of Virginia. While a graduate student, he enjoyed the unique opportunity of serving as an FBI Honors Intern and guest researcher for more than two years in the FBI Laboratory's Forensic Science Research Unit. His Ph.D. dissertation research, which was conducted at the FBI Academy in Quantico, Virginia, involved pioneering work in applying capillary electrophoresis to STR typing. After receiving his Ph.D. in 1995, Dr. Butler obtained a prestigious National Research Council postdoctoral fellowship to the National Institute of Standards and Technology (NIST). While a postdoc at NIST, he designed and built STRBase, the widely used Short Tandem Repeat Internet Database (http://www.cstl.nist. gov/biotech/strbase) that contains a wealth of standardized information on STRs used in human identity applications. Dr. Butler then went to California for several years to work as a staff scientist and project leader at a startup company named GeneTrace System to develop rapid DNA analysis technologies involving time-of-flight mass spectrometry. In the fall of 1999, he returned to NIST to lead their efforts in human identity testing with funding from the National Institute of Justice.

Dr. Butler received the Presidential Early Career Award for Scientists and Engineers from President George W. Bush in a White House ceremony held in July 2002. In September 2003, he was awarded the Scientific Prize of the International Society of Forensic Genetics, the first American to be given this honor by his scientific peers. Following the terrorist attacks of 11 September, 2001, Dr. Butler's expertise was sought to aid the DNA identification efforts, and he served as part of the distinguished World Trade Center Kinship and Data Analysis Panel (WTC KADAP). He is also a regular invited guest and participant in the semi-annual meetings of the FBI's Scientific Working Group on DNA Analysis Methods (SWGDAM). In addition, he serves on the Department of Defense Quality Assurance Oversight Committee for DNA Analysis and as a guest editor for the Journal of Forensic Sciences. His more than 65 publications in the field make him one of the most prolific active authors in the field with articles appearing regularly in every major forensic science journal. He has been an invited speaker to numerous national and international forensic DNA meetings and in the past few years has spoken in Germany, France, England, Portugal, Cyprus, and Australia. He is well-qualified to present the information found in this book, much of which has come from his own research efforts over the past decade. In addition to his busy scientific career, Dr. Butler and his wife serve in their community and church and are the parents of five children, all of which have been proven to be theirs through the power of STR typing.

To my wife Terilynne and our children Amanda, Marshall, Katy, Emma, and Ethan

CHAPTER 1

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