An Introduction to Forensic Genetics

by William Goodwin (University of Central Lancashire, UK); Adrian Linacre (Centre for Forensic Science, University of Strathclyde, Glasgow, UK); Sibte Hadi (University of Central Lancashire, UK)

• ISBN13: 9780470010266
• ISBN10: 0470010266
• eBook ISBN(s): 9780470010273
• Edition: 1st
• Format: Paperback
• Copyright: 2007-11-01
• Publisher: WILEY

Summary

An Introduction to Forensic Genetics is a comprehensive introduction to this fast moving area from the collection of evidence at the scene of a crime to the presentation of that evidence in a legal context. The last few years have seen significant advances in the subject and the development and application of genetics has revolutionised forensic science. This book begins with the key concepts needed to fully appreciate the subject and moves on to examine the latest developments in the field, illustrated throughout with references to relevant casework. In addition to the technology involved in generating a DNA profile, the underlying population biology and statistical interpretation are also covered. The evaluation and presentation of DNA evidence in court is discussed as well with guidance on the evaluation process and how court reports and statements should be presented. An accessible introduction to Forensic Genetics from the collection of evidence to the presentation of that evidence in a legal context Includes case studies to enhance student understanding Includes the latest developments in the field focusing on the technology used today and that which is likely to be used in the future Accessible treatment of population biology and statistics associated with forensic evidence This book offers undergraduate students of Forensic Science an accessible approach to the subject that will have direct relevance to their courses. An Introduction to Forensic Genetics is also an invaluable resource for postgraduates and practising forensic scientists looking for a good introduction to the field.

Table of Contents

Preface	p. ix
About the Authors	p. x
Introduction to forensic genetics	p. 1
Forensic genetics	p. 1
A brief history of forensic genetics	p. 2
References	p. 5
DNA structure and the genome	p. 7
DNA structure	p. 7
Organization of DNA into chromosomes	p. 7
The structure of the human genome	p. 9
Genetic diversity of modern humans	p. 11
The genome and forensic genetics	p. 11
Tandem repeats	p. 12
Single nucleotide polymorphisms (SNPs)	p. 13
Further reading	p. 14
References	p. 14
Biological material - collection, characterization and storage	p. 17
Sources of biological evidence	p. 17
Collection and handling of material at the crime scene	p. 19
Identification and characterization of biological evidence	p. 19
Evidence collection	p. 20
Sexual and physical assault	p. 21
Presumptive testing	p. 21
Storage of biological material	p. 23
References	p. 24
DNA extraction and quantification	p. 27
DNA extraction	p. 27
General principles of DNA extraction	p. 27
DNA extraction from challenging samples	p. 30
Quantification of DNA	p. 32
DNA IQ system	p. 36
References	p. 36
The polymerase chain reaction	p. 39
The evolution of PCR-based profiling in forensic genetics	p. 39
DNA replication - the basis of the PCR	p. 40
The components of PCR	p. 40
The PCR process	p. 42
PCR inhibition	p. 44
Sensitivity and contamination	p. 45
The PCR laboratory	p. 46
Further reading	p. 48
References	p. 48
The analysis of short tandem repeats	p. 51
Structure of STR loci	p. 51
The development of STR multiplexes	p. 51
Detection of STR polymorphisms	p. 54
Interpretation of STR profiles	p. 56
Further reading	p. 61
References	p. 61
Assessment of STR profiles	p. 65
Stutter peaks	p. 65
Split peaks (+/-A)	p. 65
Pull-up	p. 67
Template DNA	p. 68
Overloaded profiles	p. 68
Low copy number DNA	p. 68
Peak balance	p. 70
Mixtures	p. 70
Degraded DNA	p. 71
References	p. 73
Statistical interpretation of STR profiles	p. 75
Population genetics	p. 75
Deviation from the Hardy-Weinberg equilibrium	p. 76
Statistical tests to determine deviation from the Hardy-Weinberg equilibrium	p. 77
Estimating the frequencies of STR profiles	p. 78
Corrections to allele frequency databases	p. 78
Which population frequency database should be used?	p. 83
Conclusions	p. 83
Further reading	p. 84
References	p. 84
The evaluation and presentation of DNA evidence	p. 87
Hierarchies of propositions	p. 87
Likelihood ratios	p. 89
Two fallacies	p. 93
Comparison of three approaches	p. 94
Further reading	p. 95
References	p. 95
Databases of DNA profiles	p. 97
The UK National DNA database (NDNAD)	p. 97
International situation	p. 102
References	p. 104
Kinship testing	p. 105
Paternity testing	p. 105
Identification of human remains	p. 111
Further reading	p. 112
References	p. 112
Single nucleotide polymorphisms	p. 115
SNPs - occurrence and structure	p. 115
Detection of SNPs	p. 115
SNP detection for forensic applications	p. 117
Forensic applications of SNPs	p. 119
SNPs compared to STR loci	p. 120
Further reading	p. 121
References	p. 121
Lineage markers	p. 125
Mitochondria	p. 125
Applications of mtDNA profiling	p. 127
The Y chromosome	p. 130
Forensic applications of Y chromosome polymorphisms	p. 131
Further reading	p. 132
References	p. 133
Forensic parameters	p. 137
Useful web links	p. 139
Glossary	p. 141
Abbreviations	p. 145
Index	p. 147
Table of Contents provided by Ingram. All Rights Reserved.