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A Guide to Forensic DNA Profiling

A Guide to Forensic DNA Profiling

The increasingly arcane world of DNA profiling demands that those requiring to understand at least some of it must find a source of reliable and understandable information. Combining material from the successful Wiley Encyclopedia of Forensic Science with newly commissioned and updated material, the Editors have used their own extensive experience in criminal casework across the world to compile an informative guide that will provide knowledge and thought-provoking articles of interest to anyone involved or interested in the use of DNA in the forensic context.

Following extensive introductory chapters covering forensic DNA profiling and forensic genetics, this comprehensive volume presents a substantial breadth of material covering:

  • Fundamental material—including sources of DNA, validation, and accreditation
  • Analysis and interpretation—including extraction, quantification, amplification, and interpretation of electropherograms (epgs)
  • Evaluation—including mixtures, low template, and transfer
  • Applications—databases, paternity and kinship, mitochondrial DNA, wildlife DNA, single-nucleotide polymorphism, phenotyping, and familial searching
  • Court—report writing, discovery, cross examination, and current controversies

With contributions from leading experts across the whole gamut of forensic science, this volume is intended to be authoritative but not authoritarian, informative but comprehensible, and comprehensive but concise. It will prove to be a valuable addition, and a useful resource, for scientists, lawyers, teachers, criminologists, and judges.

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Table of Contents

Cover

Title Page

Copyright

Contributors

Foreword

Preface

Glossary

Abbreviations and Acronyms

Part A: Background

Chapter 1: Introduction to Forensic Genetics

The Ideal Forensic Material—Individualization

DNA—The Molecule

DNA in Populations

The Scientific Expert

Forensic DNA

Related Articles in EFS Online

Chapter 2: DNA: An Overview

History of DNA Profiling

STR Analysis

DNA Extraction

DNA Quantification

DNA Profile Interpretation

Low Template DNA Profiling

References

Related Articles in EFS Online

Chapter 3: DNA

Introduction

Fundamental Human Anatomy

Fundamental Genetics

Fundamental Molecular Biology

Summary

References

Related Articles

Chapter 4: Introduction to Forensic DNA Profiling — The Electropherogram (epg)

Notation and Descriptions of Profiles

Separation

The Kit

Relative Fluorescence Units, Peak Height, and Peak Area

Controls

References

Chapter 5: Biological Stains

Introduction

Locating Potential Biological Material

Other Body Fluids and Secretions

Trace Biological Material

References

Related Articles in EFS Online

Chapter 6: Sources of DNA

Introduction

Blood

The Vaginal Tract

Semen

Trace DNA

Low Copy Number and Single Cells

Saliva

Fingernails

Fingerprints

Hair

Teeth and Bone

Formalin-Fixed Paraffin-Embedded Tissue Samples

Fecal Material

Unusual Sources

Plant Material as Forensic Evidence

Summary

References

Related Articles in EFS Online

Chapter 7: Identification and Individualization

Identity, Identification, and Individualization

DNA Evidence and Individualization

Uniqueness

Reporting Identification Evidence in Court

References

Related Articles in EFS Online

Chapter 8: Transfer

Introduction

Transfer of Trace DNA

Factors Affecting the Detection of Transferred DNA

Evaluation of DNA Transfer in Forensic Casework

Potential Contamination Issues

Conclusion

References

Related Articles in EFS Online

Chapter 9: Laboratory Accreditation

Introduction and Background

Accreditation

Accreditation Schemes

ISO17025

Accreditation in the Forensic Context

Defense Expert Accreditation

Conclusion

End Notes

References

Chapter 10: Validation

Introduction

Validation Defined

Types of Validations

Governing Bodies and Guidelines

Internal Validations Process

Sample Selection

Sample Size

Setting Thresholds

Performance Checks and Material Modifications

Challenges of Validation Process

Testimony and Training

References

Further Reading

Related Articles

Related Articles in EFS Online

Part B: Analysis & Interpretation

Chapter 11: Extraction

Introduction

Differential Extraction

Solid-Phase Extraction Technologies

Solutions for Specific Sample Types

Contamination

Automated Extraction

References

Related Articles in EFS Online

Chapter 12: Quantitation

Introduction

Background

Principles of Real-Time PCR

Quantitation of Low-Level DNA Analysis

References

Chapter 13: Amplification

References

Chapter 14: Interpretation of Mixtures; Graphical

Identifying and Interpreting Mixtures

Mixed Samples; Analysis of Mixtures

Major/Minor Mixtures

Complex Mixtures

Stutter

Low-Template Mixtures

Partial Profiles

Degraded Samples

References

Chapter 15: DNA Mixture Interpretation

Introduction

Conventional Mixture Deconvolution

Probabilistic Approaches

Semi-Continuous Probabilistic Genotyping Approaches

Fully Continuous Probabilistic Genotyping Approaches

Black Boxes and Due Process: Transparency in Expert Software Systems

References

Chapter 16: Degraded Samples

Introduction

Characteristics of Degraded DNA Samples

Objectively Identifying Potential Degradation/Inhibition

Mini-STRs

Y-STR Testing

Low Copy Number Testing

Addressing Inhibition

The Coroner's Inquest into the Death of Jaidyn Leskie

Conclusions

References

Related Articles in EFS Online

Chapter 17: Ceiling Principle: DNA

Introduction

References

Related Articles in EFS Online

Chapter 18: Y-Chromosome Short Tandem Repeats

Introduction

Commonly Used Y-STR Markers

Interpretation of a Y-STR Match

Casework Applications

References

Chapter 19: Expert Systems in DNA Interpretation

Introduction

Challenges in DNA Interpretation

The Likelihood Ratio Framework

The Need for Expert Systems

Currently Available Expert Systems

Further Evaluation of the Evidence

Comparative Studies

Validation

Remaining Challenges

References

Related Articles in EFS Online

Chapter 20: Paternity Testing

History of Markers Used for Paternity Testing

Legal Aspects of Paternity Testing

Practical Process

Data Analysis

Testing with or without a Sample of the Mother

Mutation Events

Gonosomal Marker and Paternity Testing

Statistical Evaluation

Kinship Cases

Paternity Tests in Case of Immigration

Quality Management in Paternity Testing Laboratories

References

Related Articles

Chapter 21: Observer Effects

Introduction

Underlying Psychological Phenomenon

Minimizing Observer Effects

Empirical Studies of Observer Effects in Forensic Science

Case Managers and Sequential Unmasking

References

Related Articles

Related Articles in EFS Online

Part C: Applications

Chapter 22: Databases

Introduction

A Brief Summary of National DNA Database Programs

Operational Impact of Forensic DNA Databases

Investigative and Intelligence Use of Forensic DNA Databases

Familial Searching

Cold Case Review and Postconviction Testing

Socio-Legal Issues Associated with Forensic DNA Databases

Summary

Acknowledgment

References

Related Articles

Chapter 23: Missing Persons and Paternity: DNA

Introduction

Measures of Inbreeding and Relatedness

Frequencies of Sets of Alleles

Parentage Testing

Missing Person Calculations

Discussion

Acknowledgment

References

Related Articles in EFS Online

Chapter 24: Familial Searching

Familial Searching: Definition

Kinship Indices

Strategies for Autosomal Familial Searches

Further Statistical Issues

Ethical Aspects

End Notes

References

Chapter 25: Single Nucleotide Polymorphism

Introduction

Challenges in Forensic Genetics

SNP Typing Methods

SNPs as Investigative Leads

References

Related Articles

Related Articles in EFS Online

Chapter 26: Mini-STRs

Emergence of Mini-STRs as a Forensic Tool

Challenges to Mini-STR Development

Conclusions

References

Related Articles in EFS Online

Chapter 27: Phenotype

Introduction

Indirect Method of Phenotype Inference

Direct Method

Acknowledgments

End Notes

References

Chapter 28: Mitochondrial DNA: Profiling

Introduction

mtDNA Biology

Nonforensic Uses

Laboratory Practices

References

Related Articles in EFS Online

Chapter 29: Geographical Identification by Viral Genotyping

Introduction

Relations between Parasitic Genotype and Geographic Area

Detection of Parasitic Genotypes from Forensic Samples

Estimation of Geographic Origin

Potential New Approaches toward Geographical Identification Using Human Parasites

References

Further Reading

Related Articles in EFS Online

Chapter 30: Microbial Forensics

Introduction

Detection and Identification Capabilities

Interpretation of Microbial Forensic Results

Conclusion

References

Further Reading

Chapter 31: Wildlife Crime

Introduction

Species Identification

DNA Profiling

Limits of Detection

Emerging Techniques

Standards

Acknowledgments

References

Related Articles

Related Articles in EFS Online

Part D: Court

Chapter 32: DNA Databases – The Significance of Unique Hits and the Database Controversy

Introduction and the Controversy

Posterior Odds

How Do Courts Deal with the Issue?

Some Final Remarks and Conclusion

Appendix

References

Related Articles

Chapter 33: DNA Databases and Evidentiary Issues

Introduction

Adventitious Matches

Estimation of DNA Match Statistics after a Database Search

Conclusion

End Notes

References

Related Articles

Chapter 34: Communicating Probabilistic Forensic Evidence in Court

Characterizations of a Match

How Do Jurors Think About and Use Match Statistics?

How Should a Forensic Scientist Communicate Match Statistics?

End Notes

References

Related Articles

Chapter 35: Report Writing for Courts

Introduction

Legal Requirements of an Expert Report

Acknowledgments

End Notes

References

Related Articles in EFS Online

Chapter 36: Discovery of Expert Findings

Introduction

Discovery in Common and Civil Law Systems

Criminal and Civil Law Procedures

Discovery in Criminal Matters

Discovery in Civil Matters

Conclusion

Acknowledgments

End Notes

References

Related Articles in EFS Online

Chapter 37: Ethical Rules of Expert Behavior

Introduction

Defining Ethics

Fact Settings Presenting Potential Ethical Problems

Sanctions against Experts for Unethical Conduct

Conclusion

End Notes

Chapter 38: Verbal Scales: A Legal Perspective

Helpfulness

The

Davie

principle

“Sufficiently Reliable to be Admitted”

The “range of opinion” rule

References

Chapter 39: Direct Examination of Experts

Nature, Purpose, and Scope

Expert Witnesses and Opinion Evidence

Eliciting the Testimony of the Expert on Direct Examination

Related Articles

Related Articles in EFS Online

Chapter 40: Cross-Examination of Experts

Nature, Purpose, and Scope

Cross-Examination—Some Additional Concepts

Cross-Examining the Qualifications of the Witness

Cross-Examining with Contrary Opinions Expressed in the Expert's Professional Literature

Redirect and Re-Cross-Examination

Related Articles

Related Articles in EFS Online

Chapter 41: DNA in the UK Courts

Introduction

Admissibility

Statistics and DNA Profiles

Statistics, Experience, and Expertise

Low Template DNA (LTDNA) Evidence

Transfer and Persistence of DNA

Recent Jurisprudence

Scotland—Different Jurisdiction, Different Standard?

Overall

End Notes

References

Related Articles

Related Articles in EFS Online

Chapter 42: Legal Issues with Forensic DNA in the USA

Building the Database Empire

Opting Out—Private Databases

Focusing on Sensitivity over Accuracy

An Example:

The NYOCME and US v Johnny Morgan

be

US v. Johnny Morgan

Shifting Standards

Legal Controversy and Implications

Closing Off DNA from Defense Scrutiny

Conclusion

End Notes

Chapter 43: Issues in Forensic DNA

Introduction

Issues

Experience

Conclusion

End Notes

References

Chapter 44: Future Technologies and Challenges

Crime Scene

Laboratory Analysis

Interpretation

Evaluation

“Blue Sky” Thinking

End Notes

References

Index

End User License Agreement

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Guide

Cover

Table of Contents

Foreword

Preface

Part A: Background

Begin Reading

List of Illustrations

Chapter 2: DNA: An Overview

Figure 1 Example of typical stutter pattern of alleles 24 and 26 at STR locus FGA

Chapter 3: DNA

Figure 1 Diagrammatic representation of mitosis, the process of cell replication for adult or somatic cells

Figure 2 Diagrammatic representation of meiosis, the process of cell replication for germline cells or gametes

Figure 3 An example of the effect of assortment in generating haploid diversity. If there are three pairs of blue chromosomes (I, II, and III) which are duplicated during prophase to give three pink duplicate chromosome pairs. There are four different ways in which these three pairs of pairs can align at the equator of the cell during metaphase (a–d). After the two rounds of meiotic division this produces eight different possible haploid sets (1–8). The number of theoretical possibilities in a diploid organism is equal to 2

n

, where

n

is the number of chromosomes in the haploid gamete

Figure 4 Representation of recombination showing its effect in shuffling the distribution of genetic material in the resultant gametes

Figure 5 A nucleotide unit (or monomer). The nitrogenous base is either a purine or a pyrmidine. Nucleotide units are linked through a phosphodiester bond via successive phosphate residues and the free oxygen on the 3′ carbon

Chapter 4: Introduction to Forensic DNA Profiling — The Electropherogram (epg)

Figure 1 SGM+ epg

Figure 2 Portion of epg, labeled

Figure 3 Raw data

Figure 4 Operating parameters for gel run

Figure 5 Example of linear regression

Figure 6 Illustration of exponential and moving average representations

Figure 7 Baseline noise

Figure 8 D21 locus at “standard” zoom

Figure 9 Zoom of D21 locus

Figure 10 Peak limit markers

Figure 11 Allelic ladder

Figure 12 Internal standard

Figure 13 Stutter illustration

Chapter 5: Biological Stains

Figure 1 The catalytic conversion mechanism of presumptive color reagents for the presumptive detection of blood, using tetramethylbenzidine as an typical substrate

Figure 2 Immunochromatographic membrane testing of blood using monoclonal antibodies specific to human hemoglobin

Figure 3 The enzymatic breakdown of α-naphthol phosphate by acid phosphatase is the basis for the presumptive color test for seminal fluid

Figure 4 A single sperm cell with its tail among vaginal cells stained with the Christmas Tree reagents

Figure 5 Morphological changes of sperm cells as they degrade

Figure 6 Mapping of underwear for acid phosphatase (a) and amylase (b). Purple (dark)-stained areas (a) demonstrate acid phosphatase distribution. (b) White (light) areas demonstrate the distribution of amylase

Figure 7 Creatinine color change at 5 and 10 min

Figure 8 Urobilinogen test for the presumptive detection of fecal material. Tubes (from left) blank, positive fecal sample, and control

Chapter 10: Validation

Figure 1 Process map of validation considerations

Figure 2 Governing bodies influencing validations in the USA

Figure 3 Testing sample categories

Chapter 12: Quantitation

Figure 1 Cycle thresholds plotted against the logarithm of the concentration of DNA produce a standard curve

Figure 2 Quantity vs. the

R

2

value. As the

R

2

value changes there is no corresponding change in the measurement of the quantity of DNA in the corresponding run. Therefore,

R

2

is not a good measure of accuracy [10]

Figure 3 Quantity vs. slope. From this plot variations in the values of the slope do not correlate to changes in the corresponding quantity of DNA [10]

Figure 4

Y

-intercept vs. quantity. Unlike the other two factors, there is a direct correlation between the quantity of DNA and the curves corresponding to the

Y

-intercept [10]

Chapter 14: Interpretation of Mixtures; Graphical

Figure 1 Profile with unequal peak heights: 15 15 and a 16 16, or a 15 16 and a 15 15?

Figure 2 A three-allele locus

Figure 3 Two-person mixture at a single locus (the unlabeled peak is considered stutter)

Figure 4 Peak height imbalance

Figure 5 Major/minor locus

Figure 6 D2 locus

Figure 7 THO1 locus

Figure 8 vWA locus where defendant is 17 17

Figure 9 Allelic peaks at the same level as stutter

Figure 10 Illustration of one channel of a profile from “degraded” DNA [7]

Figure 11 Illustration of mixture with one contributor degraded

Chapter 15: DNA Mixture Interpretation

Figure 1 Partial electropherograms of two single-source samples and their corresponding 1:2 mixture. Allelic designations for each peak appear immediately below it with corresponding peak height information (in relative fluorescence units, RFUs) immediately below that. Locus names are in the boxes above.

Chapter 16: Degraded Samples

Figure 1 An electropherogram exhibiting signs of degradation or inhibition. Degradation and inhibition are marked by observing progressively falling peak heights as the size of the DNA product increases (left to right)

Figure 2 Electropherograms associated with a high-quality genomic DNA template (a) and with the condom sample from the rape investigation (b) that qualifies as being inconsistent with the sampling of positive controls

Chapter 18: Y-Chromosome Short Tandem Repeats

Figure 1 Y-STR profile using the Applied Biosystems AmpF

l

STR

®

Yfiler™ Amplification Kit. 17 Y-STR loci are coamplified in a single reaction, separated by capillary electrophoresis, and displayed as an electropherogram. The

x

axis represents fragment size (base pairs) and the

y

axis represents signal intensity (relative fluorescence intensity (RFU)). Each locus is labeled with a fluorescent dye: top channel—6-FAM (blue); second channel—VIC (green); third channel—NED (black); fourth channel—PET (red); bottom channel—LIZ (orange)—internal size standard

Chapter 20: Paternity Testing

Figure 1 Male DNA profile - multiplex PCR including 16 variable STR marker and Amelogenin (gender typing marker “XY”)

Figure 2 Examples of DNA profiles from a mother, a child and two alleged fathers.

Figure 3 Schematic presentation of a family tree in a deficiency case.

Chapter 22: Databases

Figure 1 Summary of functionality of a standard DNA database system

Chapter 25: Single Nucleotide Polymorphism

Figure 1 Examples of how point mutations in the last nucleotide of codons can alter the protein sequence

Figure 2 The cyclic SBE reaction. Double-stranded PCR products are denatured at high temperature, the SBE primers anneal to the PCR products at low temperature, and single base extension of the SBE primer is made at the optimal temperature of the Taq DNA polymerase. The SBE primer anneals to the single-stranded PCR product immediately upstream of the SNP position, and a fluorescently labeled dideoxyribonucleotide complimentary to the nucleotide in the SNP position is added to the SBE primer. The dideoxyribonucleotides are labeled with four different fluorophores. The SBE products can be analyzed by CE where the length of the SBE primer identifies the SNP locus and the color of the fluorescent label identifies the SNP allele

Figure 3 Next-generation sequencing. (a) Nucleotides are added sequentially to the sequencing reaction and incorporated into the DNA strand by the DNA polymerase. In the example, dATP is added to the reaction and the DNA is extended with two dATPs. This releases two pyrophosphates (PP

i

) and two protons (H

+

) that may be detected by the 454 sequencer and the Ion Torrent platform, respectively. (b) All nucleotides are added to the sequencing reaction. The nucleotides are labeled with four different fluorophores and blocked to prevent further extension. In the example, the DNA strand is extended with one fluorescent dATP. The fluorophore is detected by the Illumina platform and the block is subsequently removed prior to a new round of extension

Figure 4 Phylogeographic studies allow a detailed picture of the mtDNA (a) and Y chromosome (b) haplogroups and their geographical distribution. The letters used to designate the mtDNA and Y chromosome haplogroups were defined independently of each other and, therefore, there is no geographical or genetic relationship between, e.g., the mtDNA haplogroup A and the Y chromosome haplogroup A

Figure 5 Transmission patterns of the sex chromosomes (X and Y) and the mtDNA (relative sizes are for illustration only and are not to scale). Unlike autosomes, lineage markers are transmitted directly without any recombination. The Y chromosome is only transmitted from fathers to sons, while the mtDNA is transmitted from mothers, to both sons and daughters. Regarding the X chromosome, there is difference in the number of chromosomes present in each sex: females have two copies while males have only one X chromosome and one Y chromosome. Therefore, men inherit the X chromosome from their mothers (an X chromosome that has suffered recombination before being transmitted), whereas women inherit one X chromosome from each parent. The paternal X chromosome is transmitted to the daughters without suffering recombination in the majority of its extension

Figure 6 Examples of eye colors

Chapter 26: Mini-STRs

Figure 1

Figure 2

Chapter 27: Phenotype

Figure 1 Global apportionment of Y haplogroup diversity. Pie charts illustrate the proportion of haplogroups as identified in the legend at the bottom. Populations are identified with a two-letter code/defined by the legend to the right

Figure 2 Geographical distribution of skin melanin levels. Higher values correspond to darker colors [Reproduced with permission from Cengage Learning © 2000]

Figure 3 Individual genomic ancestry estimates portrayed with a tetrahedron plot. (a) The most likely estimate (MLE) for an individual is shown with a spot (red) which corresponds to specific percentages shown in the upper right-hand box. The percentages are obtained in four-dimensional space with an algorithm, but can be displayed on a two-dimensional piece of paper using this plot diagram; projecting the MLE spot perpendicularly on the each of the three axes within any of the four subtriangles (arrows) gives the corresponding percentage. The closer the spot is to the triangle vertices (labeled European, sub-Saharan African, East Asian, or Native American), the higher the percentage admixture corresponding to that type of ancestry. (b) Plot of numerous MLEs for individuals of color-coded self-described ancestry (legend upper right) obtained using the 176 AIM panel described in the text. Though continental Africans show predominantly African admixture, this African-American sample shows considerable European admixture and the Puerto Rican sample shows even more

Figure 4 Individual genomic ancestry admixture estimates among Europeans with respect to a five-population European model. The 1346 European AIM panel described in the text was used to generate the data. For each individual, the proportional ancestry derived from these five parental European populations is represented with a bar, using colors coding for each ancestry type and the scaling on the left. Markers and genotype data were derived from the work published by Bauchet

et al.

[11] [Reproduced from Ref. [11]. © Elsevier, 2007]

Figure 5 Regression of eumelanin value (

M

) from skin measurement on African individual genomic ancestry estimates in a population of (a) African Americans, European Americans, and Afro-Caribbean samples, obtained using a 30-AIM panel [12] and (b) Puerto Ricans, obtained using the 176-AIM panel described in the text [3, 10]. Each spot represents the point estimate of African admixture for an individual. Higher

M

values correspond to darker skin colors (higher concentration of eumelanin per unit skin area)

Figure 6 Regression of iris eumelanin scores from digital photographs on European individual genomic ancestry estimates in a population predominantly of self-described “Caucasians”. Each spot represents a point estimate of European admixture for an individual. Higher color scores correspond to lighter colors (less eumelanin)

Figure 7 Example of an admixture database entry. Entries in this particular database (www.dnawitness.net) included a digital photograph taken under standardized conditions, country of origin, that of their mother, father, and their maternal grandmother (MGM) and paternal grandmother (PGM) as well as maternal grandfather (MGF) and paternal grandfather (PGF). Similarly, the self-reported “ethnic identity” is provided by each subject. The laboratory that administers this database took the photograph and determined the admixture profile with respect to a global four-population model using the 176-AIM panel discussed in the text. The database had 4700 entries as of August 2007

Figure 8 Examples of iris color inference enabled with the 33 marker/iris color database described in the text. Iris color is inferred using the average color exhibited by samples in the database with matching diplotypes and an interval is provided around this point estimate using the range of colors exhibited or a default range, whichever is larger. This inferred range is then used to query the database and all of the irides falling within the range are presented. This typically produces tens or hundreds of irides of similar overall color from a distance (determined by eumelanin content) though of different pattern, depending on the color and database size. Shown here are returns for 27 test subjects. Six representatives of the inferred iris color score range are provided for each of the 27 test irides below the line and the actual color of the test iris is shown above the line

Chapter 29: Geographical Identification by Viral Genotyping

Figure 1 Phylogenetic analysis of JCV genome; 610 bp hypervariable region (IG region) of JCV genome was phylogenetically analyzed. Open circle, African isolates; closed circle, European isolates; and closed triangle, Asian isolates

Figure 2 Phylogenetic analysis of HHV-1 genome; 666 bp hypervariable region of HHV-1 genome was phylogenetically analyzed. Open circle, African isolates; closed circle, European isolates; and closed triangle, Asian isolates

Chapter 30: Microbial Forensics

Figure 1 General schematic approach to a disease outbreak involving public health and/or law enforcement

Chapter 43: Issues in Forensic DNA

Figure 1 Illustration of the mixture problem—six “suspect profiles” from only two actual contributors

Figure 2 CPI illustration

List of Tables

Chapter 2: DNA: An Overview

Table 1 Characteristics of SGM Plus STR loci

a

Table 2 STR loci included in newly developed commercial STR profiling kits

Table 3 List of materials commonly collected for DNA analysis during forensic investigations with reference to extraction methods

Chapter 14: Interpretation of Mixtures; Graphical

Table 1 Hypothetical scenario from intimate swab

Table 2 Calculation of “foreign” alleles from swab

Table 3 Comparison of foreign alleles with suspect

Table 4 Possible contributors to two-person profile

Chapter 18: Y-Chromosome Short Tandem Repeats

Table 1 Commercial Y-STR Multiplex Amplification Kits

Chapter 19: Expert Systems in DNA Interpretation

Table 1 Summary of the currently available interpretation systems

Table 2 Summary of the published studies comparing the performance of different expert systems

Chapter 20: Paternity Testing

Table 1 Results of a paternity test involving a mother, a child, and two alleged fathers

Table 2 Results of a half-sibling test using X-chromosomal markers

Table 3 Genotypes of the child, the mother, and the alleged father and the resulting paternity index formulas

Table 4 Genotypes of the child and the alleged father and the resulting paternity index formulas

Chapter 23: Missing Persons and Paternity: DNA

Table 1 Identity by descent measures for noninbred relatives

Table 2 Genotype-pair probabilities for noninbred relatives (different subscripts denote different alleles)

Table 3 Paternity index calculations when

H

d

is that alleged father is related to the father

Table 4 Paternity index values for a population with evolutionary relatedness

Table 5 An example of a missing person calculation

Table 6 An example of a missing person calculation

Chapter 29: Geographical Identification by Viral Genotyping

Table 1 Distribution of JCV genotypes in the Old World

Table 2 Distribution of BKV genotypes in the Old World

Chapter 33: DNA Databases and Evidentiary Issues

Table 1 Summary of the size and effectiveness of major DNA database programs

Table 2 Crude demonstration of expected number of adventitious matches in databases of varying sizes

A GUIDE TO FORENSIC DNA PROFILING

Editors

Allan Jamieson

Scott Bader

The Forensic Institute, Glasgow, UK

This edition first published 2016

© 2016 John Wiley & Sons Ltd

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Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!

Lesen Sie weiter in der vollständigen Ausgabe!