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Mark Stoneking

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Beschreibung

A freshly updated discussion of the foundations of—and latest developments in—molecular anthropology

In the newly revised second edition of An Introduction to Molecular Anthropology, retired researcher Dr. Mark Stoneking delivers an essential primer on genetics and molecular anthropology. The book is an accessible resource that covers key recent developments in the production and analysis of genome-wide data that highlights advances in methods and technologies, as well as the latest findings from ancient DNA.

The updated chapters build on basic genetics and evolutionary concepts to demonstrate how to make inferences about human population history and human evolution in the genomics age. It explores how evolution influences genes, how genes evolve, the different kinds of genetic variation in humans and how they are analyzed, and the latest technologies and ethical issues that arise from the sampling of modern populations.

Readers will also find:

  • A thorough introduction to the genetic evidence of human origins and the spread of humans around the world
  • Comprehensive explorations of the role of selection and adaptation in human evolution
  • Practical discussions of the impact of culture on human genetic variation
  • Complete treatments of likely future developments within molecular anthropology in the genomics era

Perfect for anthropology students and others studying introductory human evolution, An Introduction to Molecular Anthropology will also benefit practicing anthropologists and researchers in a variety of fields that touch on this topic.

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Table of Contents

Cover

Table of Contents

Title Page

Copyright

Dedication

Disclaimer

Preface to the Second Edition

Preface to the First Edition

About the Companion Website

Chapter 1: Genes: How They Are Inherited

Blood and ABO Blood Groups

Inheritance of ABO Blood Groups

Inheritance of More than One Gene: ABO and Rhesus Blood Groups

Sex Chromosomes

Determining How Traits Are Inherited: Pedigree Analysis

What Is – and Isn’t – Inherited

Concluding Remarks

References

Chapter 2: What Genes Are, What They Do, and How They Do It

Chromosomes, Proteins, and Nucleic Acids: Figuring Out What Genes Are

The Structure of Genes and What They Do: The Central Dogma and the Flow of Information

How Genes Do What They Do: Transcription and Translation

The Genetic Code

DNA Replication

The Consequences of Mutations

What Causes Mutations?

A Final Cautionary Note

References

Chapter 3: Genes in Populations

What Is a Population?

The Concept of “Effective Population Size”

The Sex Ratio and

N

e

Inbreeding and

N

e

Variation in Population Size over Time and

N

e

Differential Fertility and

N

e

N

e

for Humans

The Gene Pool with No Evolution: The Hardy–Weinberg Principle

Exceptions

A Real-life Example

Some Practical Uses for Hardy–Weinberg

References

Chapter 4: Evolutionary Forces

Nonrandom Mating

Small Population Size

Mutation

Migration

Selection

Evolutionary Forces: Summary

References

Chapter 5: Molecular Evolution

Functionally Less Important Molecules (or Parts of Molecules) Evolve Faster than More Important Ones

Conservative Substitutions Occur More Frequently than Disruptive Ones

The Rate of Molecular Evolution Is Approximately Constant

Contrasting Phenotypic and Molecular Evolution

How Do New Gene Functions Arise?

Gene Regulation and Phenotypic Evolution

References

Chapter 6: Genetic Markers

The First DNA Markers: Restriction Fragment Length Polymorphisms

Polymerase Chain Reaction

DNA Sequencing: The Sanger Method

Next-generation Sequencing

Targeting Single DNA Bases: SNPS

Variation in Length

Other Structural Variation

Concluding Remarks

References

Chapter 7: Ancient DNA

Properties of Ancient DNA: Degradation

Properties of Ancient DNA: Damage

Properties of Ancient DNA: Contamination

History of Ancient DNA Studies

References

Chapter 8: Sampling Issues

Sampling Populations: General Issues

Sampling Populations: Ethical Issues

Archival Samples

Ancient Remains

Sampling DNA Regions

Mitochondrial DNA

Y Chromosomal DNA

Autosomal DNA

X Chromosome

Public Databases

References

Chapter 9: Analysis of Genetic Data from Populations

Genetic Diversity Within Populations

Genetic Distances Between Populations

Analysis of Molecular Variance (AMOVA) and Mantel Tests

Displaying Genetic Distance Data: Trees

Displaying Genetic Data: Multidimensional Scaling, Principal Components, and Correspondence Analysis

References

Chapter 10: Analysis of Genetic Data from Individuals

Genetic Distances for DNA Sequences

Trees for DNA Sequences

Rooting Trees

Assessing the Confidence of a Tree

Network Analyses

Genome-wide Data: Unsupervised Analyses

References

Chapter 11: Inferences About Demographic History (Part 1)

Dating Events

Population Size and Population Size Change

References

Chapter 12: Inferences About Demographic History (Part 2)

Migration and Admixture

Putting It All Together: Simulations

References

Chapter 13: Human Origins

Our Closest Living Relatives

Resolving the Trichotomy

Complications

Ape Genetics and Genomics

The Origins of Our Species: Insights from Modern Populations

The Genetic Evidence: mtDNA

The Genetic Evidence: Y Chromosome

The Genetic Evidence: Autosomes

References

Chapter 14: The Origins of Our Species: Insights from Archaic Genomes

Enter the Denisovans

The Plot Thickens: Multiple Contributions of Ancestry from Archaic to Modern Humans…

… And Multiple Contributions of Ancestry from Modern to Archaic Humans!

Some Concluding Remarks

References

Chapter 15: Migration and Dispersal: The Colonization of the Americas

Into Remote Lands: The Colonization of the Americas

References

Chapter 16: Into Even More Remote Lands: The Colonization of Polynesia

What About Micronesia?

Contact Between Polynesia and the Americas?

Some Concluding Remarks

References

Chapter 17: Species-wide Selection

Species-wide Selection

Nonsynonymous Substitutions and the dN/dS Ratio

Tests Based on the Allele Frequency Distribution

Selection Tests Based on Comparing Divergence to Polymorphism

Archaic Genomes

References

Chapter 18: Local Selection

Example: Lactase Persistence

Example: EDAR

Using Admixture to Detect Selection

Concluding Remarks

References

Chapter 19: The Genetic Basis of Phenotypic Variation

Skin Pigmentation Variation

Hair and Eye Color Variation

Other Traits

Predicting Ancient Phenotypes

References

Chapter 20: Genes and Culture

Are Humans Still Evolving?

Genetic Variation Can Be Directly Influenced by Cultural Practices

Genetic Variation Can Be Indirectly Influenced by Cultural Practices

Using Genetic Analyses to Learn More About Cultural Practices: Farming/Language Family Expansions

Using Genetic Analyses to Learn More About Cultural Practices: Dating the Origin of Clothing

Concluding Remarks

References

Chapter 21: Ongoing and Future Developments in Molecular Anthropology

More Modern and Ancient DNA Genomic Studies

The Other “OMICS”

Beyond “YOU”: The Microbiome

More Analyses

Figuring Out What Mutations Do: Functional Genomics

Personal Ancestry Testing and Genomics

References

Index

End User License Agreement

List of Tables

Chapter 1

Table 1.1 Antigens and antibodies for the ABO blood groups.

Table 1.2 ABO blood group genotypes and corresponding phenotypes.

Table 1.3 Observed number of offspring who are Rh+ or Rh− and either afflicted with ellipt...

Chapter 3

Table 3.1 Values of and for different values of and .

Table 3.2 Estimates of the census and effective population sizes for great apes.

Table 3.3 MN blood group data for 16,000 Germans.

Table 3.4 ABO blood group genotypes under the 2-locus and 1-locus models.

a

Table 3.5 ABO blood types observed in an African Pygmy population and the expected numbers...

Table 3.6 Blood types observed among the offspring of families where one parent is type AB...

Chapter 4

Table 4.1 Summary of the influence of each evolutionary force on genetic variation within ...

Chapter 5

Table 5.1 Substitution rates based on comparisons between human and rodent genes.

Chapter 9

Table 9.1 Diversity values for different markers and populations.

a

Table 9.2 values for worldwide populations, based on different types of genetic marker...

Chapter 10

Table 10.1 Observed number of substitutions per site, based on parsimony analysis of 20 hum...

Chapter 13

Table 13.1 Genetic diversity (number of polymorphic sites per 1000 base pairs, based on com...

Chapter 18

Table 18.1 Frequency of the LP trait and the −13910T allele in various populations

Chapter 20

Table 20.1 Apportionment of variation for autosomal DNA, mtDNA, and Y chromosomal DNA in hu...

Guide

Cover

Table of Contents

Title Page

Copyright

Dedication

Disclaimer

Preface to the Second Edition

Preface to the First Edition

About the Companion Website

Begin Reading

Index

End User License Agreement

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An Introduction to Molecular Anthropology

Mark Stoneking

Université Claude Bernard Lyon 1 and LBBE

Villeurbanne, France

Second Edition

Copyright © 2025 by John Wiley & Sons, Inc.,

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Published by John Wiley & Sons, Inc., Hoboken, New Jersey.

Published simultaneously in Canada.

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Library of Congress Cataloging-in-Publication Data:

Names: Stoneking, Mark author | John Wiley & Sons publisher

Title: An introduction to molecular anthropology / Mark Stoneking.

Description: Second edition. | Hoboken, New Jersey : Wiley, [2025] | Includes bibliographical references and index.

Identifiers: LCCN 2025025535 | ISBN 9781394262595 hardback | ISBN 9781394262618 adobe pdf | ISBN 9781394262601 epub

Subjects: LCSH: Human genetics—Variation | Human molecular genetics | Molecular evolution | Human evolution

Classification: LCC QH431 .S784 2025 | DDC 599.93/5—dc23/eng/20250812

LC record available at https://lccn.loc.gov/2025025535

Cover Design: Wiley

Cover Images: Maps depicting human dispersals during the Holocene inferred from genomic data, modified with permission from Stoneking, M., et al., “Genomic perspectives on human dispersals during the Holocene,” Proceedings of the National Academy of Sciences USA 120: e2209475119, 2023, Author explaining the results to Khwe community in Namibia, photo courtesy of Brigitte Pakendorf, Max Planck Institute for Evolutionary Anthropology

This one is for Brigitte.

“A study of the blood of individual nations enables us to decode their distant past.”

—Ludwik Hirszfeld, A Story of One Life, 1946

“The proper study of Mankind is Man”

—Alexander Pope, Essay on Man, 1734

“Whether or not it is true that the proper study of mankind is man, it is certain that he finds great difficulty in studying anything else.”

—John William Navin Sullivan, Aspects of Science, 1923

Disclaimer: No artificial intelligence was used in the writing of this book (only natural stupidity).

Preface to the Second Edition

As it is more than 10 years now since I started working on the first edition of Introduction to Molecular Anthropology, an updated version is sorely needed. It is amazing indeed to contemplate how much has changed; developments that seemed so new and wondrous at that time, such as getting genome sequences from archaic humans and all that they have told us about human evolution, are now considered part of mainstream science – if you need further proof, look no further than the awarding of the 2022 Nobel Prize in Physiology or Medicine to paleogenomicist extraordinaire Svante Pääbo for “… discoveries concerning the genomes of extinct hominins and human evolution.” There have been enormous advances in our ability to obtain and analyze ancient DNA; who would have thought back then that we would now have genome-wide data from more than 10,000 ancient modern human remains, dating to as much as 40,000 years ago or so, or that it would be possible to reconstruct entire genealogies of ancient communities? We also have much more in the way of genome-wide data from contemporary human populations, including whole-genome sequences from tens of thousands of individuals, and there have been similarly incredible advances in our ability to analyze and interpret such massive amounts of data. And there have also been major advances in other aspects of molecular anthropology, such as determining the important genetic changes that made humans human and what those genetic changes actually do. So, there is a lot of new stuff in this book and it is well worth reading, in case you’ve seen the first edition and were wondering how much is new!

The overall philosophy and raison d’être (pardon my French, but now that I’ve retired and moved to France I need to practice!) of this edition remain the same as that of the first edition, so the interested reader should consult the preface to the first edition (included after this preface) for that information. The structure of the book, however, has changed somewhat. Chapters 1–5 include background material on basic aspects of genetics, molecular genetics, evolutionary and population genetics, and molecular evolution; not much has changed here. Chapter 6 deals with properties of the various kinds of genetic markers that are used in molecular anthropological studies; here I have decided, with great reluctance, to remove the discussion of classical markers (blood groups, serum proteins, red cell enzymes, and so forth) in order to keep the length of the book manageable, as these are hardly studied anymore – and if they are, it is at the DNA level, and not at the marker level. The interested reader can still find this information in the first edition, as well as in Luca Cavalli-Sforza’s magnum opus, The History and Geography of Human Genes, which is a magnificent summary of everything we learned from classical markers (which turns out to be quite a lot!). Chapter 8 covers ancient DNA and is moved up in prominence in the book (in accordance with the prominence ancient DNA now occupies in molecular anthropology!) and considerably updated, to reflect that fact that ancient DNA is now a mature science. Chapter 8 covers issues concerned with sampling individuals, populations, and genomic regions for molecular anthropological studies, as these can all have profound effects on the outcome and interpretation of such studies. This is followed by four chapters (up from three in the previous edition) on methods for analyzing genetic/genomic data from populations (Chapter 9), from individuals (Chapter 10), and on making inferences about demographic history – the latter split into two chapters (Chapters 11 and 12), to reflect both the enormous increase in methods devoted to various aspects of demographic history, and because I’ve tried to respond to requests to include more examples in these chapters. Be forewarned, though, it is still not easy going through these chapters!

Beginning with chapter 13, the book now turns to what we’ve actually learned about ourselves from molecular anthropological studies. Chapter 13 covers human origins, and includes what are arguably two of the most important contributions of the molecular approach to anthropology, namely the answers to the following questions: who are our closest living relatives, and what model best explains the origin of modern humans? For the latter, it turns out that genome sequences from archaic humans were the key to the answer, and that is the subject of Chapter 14. The next subject is dispersal and migration, and the next two chapters cover in some detail what we’ve learned about two of the more remarkable accomplishments of humans, namely the colonization of the New World (Chapter 15) and the colonization of Oceania (Chapter 16). This is followed by two chapters on identifying and evaluating the impact of natural selection on humans – Chapter 17 deals with species-wide selection (i.e., selection that influenced all humans and led to the genetic changes that were important in making humans human), and Chapter 18 with local selection (i.e., selection that has influenced only some human populations, and led to the genetic changes that were important for humans to be able to colonize more of this planet than any other organism – with the exception of our parasites, of course!). Chapter 19 is then a brand-new chapter on the genetic basis of phenotypic variation (although some of this material was scattered in different chapters in the first edition); before molecular genetics, biological anthropology was mostly concerned with trying to understand phenotypic variation, so it is useful to consider what more we’ve learned from molecular anthropology. Chapter 20 considers the relationship between genes and culture, with an emphasis on how culture may influence genetic variation, as well as how we can use genetic studies to learn more about our cultural practices (including a genetic approach to dating the origin of clothing – I kid you not!). Finally, the book ends with Chapter 21 on ongoing and (likely) future developments in molecular anthropology, covering such topics as other “omics” (transcriptomics, proteomics, etc.), the microbiome, functional genomics, and personal ancestry testing (among others). Molecular anthropology is such a vibrant, fast-moving field, and it is hard to keep up – I don’t know how many times I’ve had to go back and rewrite sections that I thought were finished, because of new studies that appeared (I even considered issuing a plea for people to stop publishing anything new, just for a couple of months until I finished writing!).

In my haste to complete the first edition of this book, I inadvertently left out a few people who should have been thanked (mea culpa!), so the following includes people who helped make either (or both) editions a reality. Rolf Pakendorf provided useful advice on contracts and on the publishing business in general. At Wiley, Gillian Kay, Ellen McArthur, Natalie Misyak, Dhanapriya Velumurthy, and Neena Ganjoo ably steered this book through the production process. Brenda Bradley, Ana Duggan, Kevin Langergraber, and Lluis Quintana-Murci all gave valuable and/or encouraging comments, while Janet Kelso and David Meltzer kindly answered a few last-minute questions. Anett Pechstein and the staff at the MPI-EVA library helped track down arcane references, while Wikipedia has been a most helpful source of illustrations and information (the latter, I hasten to add, always verified with other sources!). I’d like to thank the various students in my courses over the years who were subjected to various forms of the material in this book, and whose questions have helped me in trying to clarify my explanations; in particular, the students in the Molecular Anthropology course that I taught at the Institute for Vertebrate Paleontology and Paleoanthropology in Beijing in November 2024 provided valuable feedback on some of the new material that ended up in this book. I am particularly grateful to Laurent Duret of the CNRS Laboratoire de Biométrie et Biologie évolutive in Lyon, France, for arranging a guest position and access to an office after my retirement from Germany, and to all the LBBE members for providing a congenial atmosphere in which to work (and for stimulating conversations over nice lunches – France does have its advantages!). I also want to reiterate that the ideas presented in this book have been shaped over the years by numerous discussions with numerous colleagues and students, too many to mention by name. I feel greatly privileged to have worked for 23 years at the best place in the world for this sort of research, namely the Max Planck Institute for Evolutionary Anthropology, and one of the best parts of working there was all the great people I’ve gotten to know as a result. Finally, I am especially grateful to Brigitte Pakendorf; she not only read and commented on various drafts with her usual eagle-eye for spotting discrepancies, but our shared field-trip experiences were some of the most rewarding times of my life, and the discussions we’ve had over the years have had the most influence on my thinking about many aspects of molecular anthropology. For these reasons (and more), this book is dedicated to her.

Preface to the First Edition

When most people think about anthropology, the image that usually comes to mind is that of intrepid, Indiana Jones-like characters, traveling to remote and exotic locations; living and working under arduous conditions; digging up fossils, stone tools, or other evidence of our past; and making headlines by proclaiming that what they have found overturns everything we thought we knew about human evolution. However, there is another type of anthropology that is becoming an increasingly important source of information about our past, rivaling the study of fossils or artifacts, and that is molecular anthropology, which can be defined as the use of molecular genetic methods to address questions and issues of anthropological interest. More specifically, molecular anthropology uses genetic evidence to obtain insights into human origins, migrations, and population history, as well as the role of natural selection during human evolution, and the impact of particular cultural practices on patterns of human genetic variation. And while working in a molecular genetics laboratory or sitting in front of a computer (which is where most of the work is done nowadays) may lack the glamour and excitement of paleoanthropological fieldwork (although a lucky few of us do all too rarely get to go out and collect samples), molecular anthropology has already had, and is continuing to have, a major impact on our understanding of our evolutionary past – from the first demonstration of a surprisingly close relationship between humans and chimpanzees in the 1960s, to the mtDNA evidence for a recent African origin that developed in the 1980s, to the current fascination with whole-genome sequences from Neandertals and other archaic humans.

Molecular anthropology can thus be considered a full-fledged, mature subfield of biological anthropology (alongside paleoanthropology, primatology, and demography), and therefore deserving of equal coverage in the curricula of university anthropology departments. However, the treatment of molecular anthropology in most undergraduate textbooks in biological anthropology or human evolution is often quite superficial and generally leaves a lot to be desired – while there are some good advanced books, there is nothing really comparable for the beginning student, who may have little in the way of any previous background in science. The present book is an attempt to remedy this situation by assuming no prior knowledge of genetics and by trying to focus on understanding the logic and reasoning behind various methods and findings, while omitting (or at least, placing less emphasis on) the technical details.