Troublesome Science: The Misuse of Genetics and Genomics in Understanding Race

Posted in Books, Health/Medicine/Genetics, Media Archive, Monographs on 2018-07-02 02:33Z by Steven

Troublesome Science: The Misuse of Genetics and Genomics in Understanding Race

Columbia University Press
June 2018
216 pages
Hardcover ISBN: 9780231185721
E-book ISBN: 9780231546300

Rob DeSalle, Curator/Sackler Institute for Comparative Genomics and Professor
Richard Gilder Graduate School
American Museum of Natural History, New York, New York

Ian Tattersall, Curator Emeritus in the Division of Anthropology
American Museum of Natural History, New York, New York

Troublesome Science

It is well established that all humans today, wherever they live, belong to one single species. Yet even many people who claim to abhor racism take for granted that human “races” have a biological reality. In Troublesome Science, Rob DeSalle and Ian Tattersall provide a lucid and forceful critique of how scientific tools have been misused to uphold misguided racial categorizations.

DeSalle and Tattersall argue that taxonomy, the scientific classification of organisms, provides an antidote to the myth of race’s biological basis. They explain how taxonomists do their science—how to identify a species and to understand the relationships among different species and the variants within them. DeSalle and Tattersall also detail the use of genetic data to trace human origins and look at how scientists have attempted to recognize discrete populations within Homo sapiens. Troublesome Science demonstrates conclusively that modern genetic tools, when applied correctly to the study of human variety, fail to find genuine differences. While the diversity that exists within our species is a real phenomenon, it nevertheless defeats any systematic attempt to recognize discrete units within it. The stark lines that humans insist on drawing between their own groups and others are nothing but a mixture of imagination and ideology. Troublesome Science is an important call for researchers, journalists, and citizens to cast aside the belief that race has a biological meaning, for the sake of social justice and sound science alike.

Contents

  • Preface
  • Acknowledgments
  • 1. Evolutionary Lessons
  • 2. Species and How to Recognize Them
  • 3. Phylogenetic Trees
  • 4. The Name Game: Modern Zoological Nomenclature and the Rules of Naming Things
  • 5. DNA Fingerprinting and Barcoding
  • 6. Early Biological Notions of Human Divergence
  • 7. Mitochondrial Eve and Y-Chromosome Adam
  • 8. The Other 99 Percent of the Genome
  • 9. ABBA/BABA and the Genomes of Our Ancient Relatives
  • 10. Human Migration and Neolithic Genomes
  • 11. Gene Genealogies and Species Trees
  • 12. Clustering Humans?
  • 13. STRUCTUREing Humans?
  • 14. Mr. Murray Loses His Bet
  • Epilogue: Race and Society
  • Notes and Bibliography
  • Index
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Taking race out of human genetics and memetics: We can’t achieve one without achieving the other

Posted in Articles, Health/Medicine/Genetics, Media Archive, Politics/Public Policy, Social Science on 2016-03-24 01:52Z by Steven

Taking race out of human genetics and memetics: We can’t achieve one without achieving the other

OUPblog: Oxford University Press’s Academic Insights for the Thinking World
2016-03-23

Carlos Hoyt

Carlos Hoyt explores race, racial identity and related issues as a scholar, teacher, psychotherapist, parent, and racialized member of our society, interrogating master narratives and the dominant discourse on race with the goal of illuminating and virtuously disrupting the racial worldview. Carlos holds teaching positions at Wheelock College, Simmons College, and Boston University in Boston Massachusetts, and has authored peer-reviewed articles on spirituality in social work practice and the pedagogy of the definition of racism. He is the author of The Arc of a Bad Idea: Understanding and Transcending Race, published by Oxford University Press.

Acknowledging that they are certainly not the first to do so, four scientists, Michael Yudell, Dorothy Roberts, Rob Desalle, and Sarah Tishkoff recently called for the phasing out of the use of the concept/term “race” in biological science.

Because race is an irredeemably nebulous, confused, and confusing social construct, the authors advocate for replacing it with “ancestry.” “Ancestry,” they say, is a “process-based” concept that encourages one to seek information about genomic heritage, while race is a “patternbased” concept that induces one to organize individuals into preconceived hierarchical groupings based on shifting, murky, and contradictory combinations of appearance, geography, ability, worth, and the like.

If biological science seeks and relies on valid and maximally precise population level comparisons between groups, and race is an irrefutably imprecise proxy for consistent and concordant biological/genetic comparison, then of course we should stop using it in biology and switch over to “ancestry,” “genetic heritage,” or some other term that actually gets at what’s real, reliable, and useful. It doesn’t feel like a rocket-science proposition. And yet biological science hasn’t been able to heed the call and make the shift. And I sadly forecast that the shift won’t soon – or ever – be made – unless and until we take the step that even the well-meaning authors of this call for stop short of taking…

Read the entire article here.

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Taking race out of human genetics

Posted in Articles, Health/Medicine/Genetics, Media Archive, Politics/Public Policy, Social Science on 2016-02-06 17:35Z by Steven

Taking race out of human genetics

Science
Volume 351, Issue 6273 (2016-02-05)
pages 564-565
DOI: 10.1126/science.aac4951

Michael Yudell, Associate Professor
Dornsife School of Public Health Department of Community Health and Prevention
Drexel University, Philadelphia, Pennsylvania

Dorothy Roberts, George A. Weiss University Professor of Law and Sociology and the Raymond Pace and Sadie Tanner Mossell Alexander Professor of Civil Rights
University of Pennsylvania

Rob DeSalle, Curator, Molecular Systematics; Principal Investigator, SICG Genomics Lab; Professor, Richard Gilder Graduate School
American Museum of Natural History, New York, New York

Sarah Tishkoff, David and Lyn Silfen University Professor in Genetics and Biology
University of Pennsylvania

In the wake of the sequencing of the human genome in the early 2000s, genome pioneers and social scientists alike called for an end to the use of race as a variable in genetic research (1, 2). Unfortunately, by some measures, the use of race as a biological category has increased in the postgenomic age (3). Although inconsistent definition and use has been a chief problem with the race concept, it has historically been used as a taxonomic categorization based on common hereditary traits (such as skin color) to elucidate the relationship between our ancestry and our genes. We believe the use of biological concepts of race in human genetic research—so disputed and so mired in confusion—is problematic at best and harmful at worst. It is time for biologists to find a better way.

Read the entire article here.

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“race-based medicine” and “raced-based genomics” are deeply flawed…

Posted in Excerpts/Quotes on 2012-06-07 21:36Z by Steven

Although race is void of biological foundation, it has a profound social reality. All too apparent are disparities in health and welfare. Despite all the evidence indicating that “race” has no biological or evolutionary meaning, the biological-race concept continues to gain strength today in science and society, and it is reinforced by those who design and market DNA-based technologies. Race is used more and more in forensics, medicine and the genetic-ancestry business. Tattersall and DeSalle confront those industries head on and in no uncertain terms, arguing that “race-based medicine” and “raced-based genomics” are deeply flawed. Individuals fall ill, not populations. Belonging to any socioculturally defined race is a poor predictor of an individual’s genes, and one’s genes a poor predictor of one’s health.

Jan Sapp, “Race Finished: Book Review,” American Scientist, April-May, 2012. http://www.americanscientist.org/bookshelf/pub/race-finished.

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Race Finished: Book Review

Posted in Anthropology, Articles, Book/Video Reviews, Health/Medicine/Genetics, Media Archive, Politics/Public Policy on 2012-06-03 18:53Z by Steven

Race Finished: Book Review

American Scientist
April-May, 2012

Jan Sapp, Professor of Biology and History
York University, Toronto

Race?: Debunking a Scientific Myth. Ian Tattersall and Rob DeSalle. xviii + 226 pp. Texas A&M University Press, 2011.

Race and the Genetic Revolution: Science, Myth, and Culture. Edited by Sheldon Krimsky and Kathleen Sloan. xiv + 296 pp. Columbia University Press, 2011. cloth.

Few concepts are as emotionally charged as that of race. The word conjures up a mixture of associations—culture, ethnicity, genetics, subjugation, exclusion and persecution. But is the tragic history of efforts to define groups of people by race really a matter of the misuse of science, the abuse of a valid biological concept? Is race nevertheless a fundamental reality of human nature? Or is the notion of human “races” in fact a folkloric myth? Although biologists and cultural anthropologists long supposed that human races—genetically distinct populations within the same species—have a true existence in nature, many social scientists and geneticists maintain today that there simply is no valid biological basis for the concept.

The consensus among Western researchers today is that human races are sociocultural constructs. Still, the concept of human race as an objective biological reality persists in science and in society. It is high time that policy makers, educators and those in the medical-industrial complex rid themselves of the misconception of race as type or as genetic population. This is the message of two recent books: Race?: Debunking a Scientific Myth, by Ian Tattersall and Rob DeSalle, and Race and the Genetic Revolution: Science, Myth, and Culture, edited by Sheldon Krimsky and Kathleen Sloan. Both volumes are important and timely. Both put race in the context of the history of science and society, relating how the ill-defined word has been given different meanings by different people to refer to groups they deem to be inferior or superior in some way.

Before we turn to the books themselves, a little background is necessary. A turning point in debates on race was marked in 1972 when, in a paper titled “The Apportionment of Human Diversity,” Harvard geneticist Richard Lewontin showed that human populations, then held to be races, were far more genetically diverse than anyone had imagined. Lewontin’s study was based on molecular-genetic techniques and provided statistical analysis of 17 polymorphic sites, including the major blood groups in the races as they were conventionally defined: Caucasian, African, Mongoloid, South Asian Aborigines, Amerinds, Oceanians and Australian Aborigines. What he found was unambiguous—and the inverse of what one would expect if such races had any biological reality: The great majority of genetic variation (85.4 percent) was within so-called races, not between them. Differences between local populations accounted for 8.5 percent of total variation; differences between regions accounted for 6.3 percent. The genetic divergence between geographical populations in the course of human evolution does not compare to the variation among individuals. “Since such racial classification is now seen to be of virtually no genetic or taxonomic significance either, no justification can be offered for its continuance,” Lewontin concluded…

Race?: Debunking a Scientific Myth is a beautifully presented book, elegantly reasoned and skillfully written. Tattersall, a physical anthropologist, and DeSalle, a geneticist, are both senior scholars at the American Museum of Natural History. Their aim is to explain human diversity in terms of human evolution and dispersal since our ancestors walked out of Africa some 100,000 years ago. The patterns of diversity, they write, reflect the processes of divergence and reintegration, the yin and yang of evolution.

In biology, a grouping has biological meaning based on principles of common descent—the Darwinian idea that all members of the group share a common ancestry. On this basis, and on the ability to interbreed, all humans are grouped into one species as Homo sapiens, the only surviving member of the various species that the genus comprised. Species are arranged within the “tree of life,” a hierarchical classification that situates each species in only one genus, that genus only in one family and so on. Nothing confuses that classification more than the exchange of genes between groups. In the bacterial world, for example, gene sharing can occur throughout the most evolutionarily divergent groups. The result is a reticulate evolution—a global net or web of related organisms, and no species. Among humans, reticulation occurs when there is interbreeding within the species—mating among individuals from different geographical populations. The result of such genetic mixing of previously isolated groups—due to migrations, invasions and colonization—is that no clear boundaries can be drawn around the variety of humans, no “races” of us…

…Although race is void of biological foundation, it has a profound social reality. All too apparent are disparities in health and welfare. Despite all the evidence indicating that “race” has no biological or evolutionary meaning, the biological-race concept continues to gain strength today in science and society, and it is reinforced by those who design and market DNA-based technologies. Race is used more and more in forensics, medicine and the genetic-ancestry business. Tattersall and DeSalle confront those industries head on and in no uncertain terms, arguing that “race-based medicine” and “raced-based genomics” are deeply flawed. Individuals fall ill, not populations. Belonging to any socioculturally defined race is a poor predictor of an individual’s genes, and one’s genes a poor predictor of one’s health.

Race and the Genetic Revolution: Science, Myth, and Culture arose from two projects, both funded by the Ford Foundation and organized by the Council for Responsible Genetics, that “examined the persistence of the concept of human races within science and the impacts such a concept has had on disparities among people of different geographical ancestries.” The first project brought together academics and social-justice advocates to discuss “racialized” forensic DNA databases and seek policy solutions. The second focused on the effects of modern genetic technology in reinscribing and naturalizing the concept of race in science and society. The resulting book is a fine and richly textured compilation, in which a multidisciplinary group of scholars explore racialized medicine, various uses of genetic testing in forensics and the genetic-ancestry industry, and attempts to link intelligence and race.

Sociologist Troy Duster argues that the growing genetic-ancestry industry not only reinforces a biological conception of race but is sorely in need of government regulation in regard to claims made and accuracy of methods used to pinpoint ancestry, as was suggested by the American Society of Human Genetics in 2008…

…A different aspect of racial profiling is evident in the growing industry of racialized medicine, whose proponents might argue that even if race has no evolutionary or biological meaning, it can still be useful for medical treatments. After all, more and more diseases are reportedly correlated with ethnicity and race. But as evolutionary biologists Joseph L. Graves Jr. and Jonathan Kahn argue in their respective chapters on the subject, racialized medicine is a bad investment and is bound to fail for two reasons. First, although individual ancestries are useful on medical questionnaires, ancestry should not be conflated with race. “The issue is not primarily one of whether to use racial categories in medical practice but how,” Kahn writes.

Carefully taking account of race to help understand broader social or environmental factors that may be influencing health disparities can be warranted. . . . But it is always important to understand that race itself is not an inherent causal factor in such conditions.

As an example, he considers the drug called BiDil, FDA approved as an anti–heart-attack agent specifically marketed to African Americans on the grounds that they have a biological propensity for heart disease brought on by high blood pressure. Not only is the drug not effective for all African Americans, it is quite effective for many individuals who self-identify as Caucasian…

Read the entire review here.

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Race? Debunking a Scientific Myth

Posted in Anthropology, Books, Health/Medicine/Genetics, Media Archive, Monographs on 2012-06-03 17:47Z by Steven

Race? Debunking a Scientific Myth

Texas A&M University Press
2011-09-01
256 pages
6 x 9
Photo. 9 line art. 6 tables. Index.
Cloth ISBN: 978-1-60344-425-5

Ian Tattersall, Curator Emeritus
American Museum of Natural History

Rob DeSalle, Curator of Entomology
American Museum of Natural History in the Sackler Institute for Comparative Genomics

Race has provided the rationale and excuse for some of the worst atrocities in human history. Yet, according to many biologists, physical anthropologists, and geneticists, there is no valid scientific justification for the concept of race.

To be more precise, although there is clearly some physical basis for the variations that underlie perceptions of race, clear boundaries among “races” remain highly elusive from a purely biological standpoint. Differences among human populations that people intuitively view as “racial” are not only superficial but are also of astonishingly recent origin.

In this intriguing and highly accessible book, physical anthropologist Ian Tattersall and geneticist Rob DeSalle, both senior scholars from the American Museum of Natural History, explain what human races actually are—and are not—and place them within the wider perspective of natural diversity. They explain that the relative isolation of local populations of the newly evolved human species during the last Ice Age—when Homo sapiens was spreading across the world from an African point of origin—has now begun to reverse itself, as differentiated human populations come back into contact and interbreed. Indeed, the authors suggest that all of the variety seen outside of Africa seems to have both accumulated and started reintegrating within only the last 50,000 or 60,000 years—the blink of an eye, from an evolutionary perspective.

The overarching message of Race? Debunking a Scientific Myth is that scientifically speaking, there is nothing special about racial variation within the human species. These distinctions result from the working of entirely mundane evolutionary processes, such as those encountered in other organisms.

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