Mixed Race Studies

Why Elizabeth Warren’s refusal to take a DNA test to prove Native American ancestry was probably a smart move

The Washington Post
2018-03-14

Tara Bahrampour

Sen. Elizabeth Warren (D-Mass.) rejected a call this week by a Massachusetts newspaper to take a DNA test to prove her Native American heritage, saying it is a cherished piece of family lore and noting that she has never used it to get ahead.

She might also add that such a test may not prove anything — or at least it couldn’t establish the absence of Native American ancestry her critics might be hoping to find.

If Warren were to take one of the widely available commercial “spit tests” and DNA related to a Native American tribe showed up, she would have positive proof that her family stories are true.

But if no such DNA were evident, that would not mean she didn’t have Native American ancestry…

Read the entire article here.

There’s No Scientific Basis for Race—It’s a Made-Up Label

National Geographic
April 2018 (The Race Issue)

By Elizabeth Kolbert
Photographs by Robin Hammond

The four letters of the genetic code —A, C, G, and T—are projected onto Ryan Lingarmillar, a Ugandan. DNA reveals what skin color obscures: We all have African ancestors.

It’s been used to define and separate people for millennia. But the concept of race is not grounded in genetics.

In the first half of the 19th century, one of America’s most prominent scientists was a doctor named Samuel Morton. Morton lived in Philadelphia, and he collected skulls.

He wasn’t choosy about his suppliers. He accepted skulls scavenged from battlefields and snatched from catacombs. One of his most famous craniums belonged to an Irishman who’d been sent as a convict to Tasmania (and ultimately hanged for killing and eating other convicts). With each skull Morton performed the same procedure: He stuffed it with pepper seeds—later he switched to lead shot—which he then decanted to ascertain the volume of the braincase.

Morton believed that people could be divided into five races and that these represented separate acts of creation. The races had distinct characters, which corresponded to their place in a divinely determined hierarchy. Morton’s “craniometry” showed, he claimed, that whites, or “Caucasians,” were the most intelligent of the races. East Asians—Morton used the term “Mongolian”—though “ingenious” and “susceptible of cultivation,” were one step down. Next came Southeast Asians, followed by Native Americans. Blacks, or “Ethiopians,” were at the bottom. In the decades before the Civil War, Morton’s ideas were quickly taken up by the defenders of slavery…

Skulls from the collection of Samuel Morton, the father of scientific racism, illustrate his classification of people into five races—which arose, he claimed, from separate acts of creation. From left to right: a black woman and a white man, both American; an indigenous man from Mexico; a Chinese woman; and a Malaysian man. Photograph by Robert Clark PHOTOGRAPHED AT PENN MUSEUM

…By analyzing the genes of present-day Africans, researchers have concluded that the Khoe-San, who now live in southern Africa, represent one of the oldest branches of the human family tree. The Pygmies of central Africa also have a very long history as a distinct group. What this means is that the deepest splits in the human family aren’t between what are usually thought of as different races—whites, say, or blacks or Asians or Native Americans. They’re between African populations such as the Khoe-San and the Pygmies, who spent tens of thousands of years separated from one another even before humans left Africa…

Read the entire article here.

These Twins, One Black and One White, Will Make You Rethink Race

National Geographic
The Race Issue
April 2018

Patricia Edmonds

Marcia (left) and Millie Biggs, both 11, say people are shocked to learn that they’re fraternal twins. Marcia looks more like their mother, who’s English born, and Millie looks more like their father, who’s of Jamaican descent. PHOTOGRAPH BY ROBIN HAMMOND

Marcia and Millie Biggs say they’ve never been subjected to racism—just curiosity and surprise that twins could have such different skin colors.

When Amanda Wanklin and Michael Biggs fell in love, they “didn’t give a toss” about the challenges they might face as a biracial couple, Amanda says. “What was more important was what we wanted together.”

They settled down in Birmingham, England, eager to start a family. On July 3, 2006, Amanda gave birth to fraternal twin girls, and the ecstatic parents gave their daughters intertwined names: One would be Millie Marcia Madge Biggs, the other Marcia Millie Madge Biggs.

From a young age the girls had similar features but very different color schemes. Marcia had light brown hair and fair skin like her English-born mother. Millie had black hair and brown skin like her father, who’s of Jamaican descent. “We never worried about it; we just accepted it,” Michael says…

…odern science confirms “that the visible differences between peoples are accidents of history”—the result of mutations, migrations, natural selection, the isolation of some populations, and interbreeding among others, writes science journalist Elizabeth Kolbert. They are not racial differences because the very concept of race—to quote DNA-sequencing pioneer Craig Venter—“has no genetic or scientific basis.”

And yet 50 years after the assassination of Rev. Martin Luther King, Jr., racial identity has reemerged as a fundamental dividing line in our world…

Read the entire article here.

Frederick Douglass’s Fight Against Scientific Racism

The New York Times
2018-02-22

Eric Herschthal, Fellow
Schomburg Center for Research in Black Culture. New York Public Library

Frederick Douglass in the 1870s. Scientists, he wrote, sometimes “sacrifice what is true to what is popular.” Credit Corbis, via Getty Images

The 200th birthday of one of America’s greatest thinkers, Frederick Douglass, is being celebrated this month. Douglass is remembered as many things: a fugitive slave who gained his freedom, an abolitionist, an advocate for women’s rights, a gifted writer and orator. But we should also remember him as someone whose insights about scientific theories of race are every bit as relevant in our era as they were when he wrote them.

When Douglass rose to prominence, in the 1840s, he was living in a world just as excited and anxious about his era’s new inventions, like the railroad and the telegraph, as we are about modern-day innovation. But he understood that the ends to which science could be used were forever bound up with the moral choices of its practitioners. “Scientific writers, not less than others, write to please, as well as to instruct,” he wrote in 1854, “and even unconsciously to themselves (sometimes) sacrifice what is true to what is popular.”

That statement was part of a lecture in which he attacked one of the most prominent scientific fields of the antebellum era: ethnology, or what was sometimes called “the science of race.” Though often dismissed today as pseudoscience, at the time Douglass was writing, it was considered legitimate. The most accomplished scientists engaged in it, and the public eagerly consumed it…

…Of course, engaging with ethnology on its own terms was a dangerous game. It sometimes meant that Douglass perpetuated scientific ways of thinking about race rather than simply dismantling its logic and insisting on race as a product of history. He borrowed from the ethnological theories of his friend James McCune Smith, a fellow black abolitionist and the nation’s first credentialed black physician, to argue that both black and white people would be improved by racial mixing.

Yet it would be wrong to dismiss these ideas as merely the result of Douglass’s own mixed racial heritage — his father, possibly his owner, was white — or as a backhanded insult to black history, to black culture. They were always written in the service of a clear political agenda, one that was radical for his time: full black integration rather than segregation…

Read the entire article here.

Ancient DNA sheds light on what happened to the Taino, the native Caribbeans

Ars Technica
2018-02-19

Kiona N. Smith

Reconstruction of a Taino village in Cuba. Michal Zalewski

A new DNA study explores where the Taino came from and where they went.

The Caribbean was one of the last parts of the Americas to be settled by humans, although scientists don’t agree on when the first settlers arrived or where they came from. Some argue that people probably arrived from the Amazon Basin, where today’s Arawakan languages developed, while others suggest that the first people to settle the islands came from even farther west, in the Colombian Andes.

“The differences in opinion illustrate the difficulty of tracing population movements based on a patchy archaeological record,” wrote archaeologist Hannes Schroeder of the University of Copenhagen, Denmark, and his colleagues. Schroeder’s research team has a new study on the genetics of the long-lost Taino people, which gives some clear indications of their origin and where they went after European colonization…

…Not vanished after all

The recent work also shows that the vanished people of the Caribbean didn’t actually disappear without a trace. Modern inhabitants of the Caribbean islands mostly have a mixture of African and European ancestry, but some have a little indigenous DNA as well. That’s not entirely surprising; Spanish colonists reportedly married Taino wives, and other records say that Taino and escaped African slaves also intermarried and formed communities. Some people have made an effort to revive Taino culture and identity in the last century and a half or so, but it has never been clear how genetically related modern Caribbean residents are to the presumably vanished tribes…

Read the entire article here.

New gene variants reveal the evolution of human skin color

Science
2017-11-12

Ann Gibbons, Contributing Correspondent

Researchers have identified genes that help create diverse skin tones, such as those seen in the Agaw (left) and Surma (right) peoples of Africa. ALESSIA RANCIARO & DR. SIMON R. THOMPSON

Most people associate Africans with dark skin. But different groups of people in Africa have almost every skin color on the planet, from deepest black in the Dinka of South Sudan to beige in the San of South Africa. Now, researchers have discovered a handful of new gene variants responsible for this palette of tones.

The study, published online this week in Science, traces the evolution of these genes and how they traveled around the world. While the dark skin of some Pacific Islanders can be traced to Africa, gene variants from Eurasia also seem to have made their way back to Africa. And surprisingly, some of the mutations responsible for lighter skin in Europeans turn out to have an ancient African origin.

“This is really a landmark study of skin color diversity,” says geneticist Greg Barsh of the HudsonAlpha Institute for Biotechnology in Huntsville, Alabama.

Researchers agree that our early australopithecine ancestors in Africa probably had light skin beneath hairy pelts. “If you shave a chimpanzee, its skin is light,” says evolutionary geneticist Sarah Tishkoff of the University of Pennsylvania, the lead author of the new study. “If you have body hair, you don’t need dark skin to protect you from ultraviolet [UV] radiation.”

Until recently, researchers assumed that after human ancestors shed most body hair, sometime before 2 million years ago, they quickly evolved dark skin for protection from skin cancer and other harmful effects of UV radiation. Then, when humans migrated out of Africa and headed to the far north, they evolved lighter skin as an adaptation to limited sunlight. (Pale skin synthesizes more vitamin D when light is scarce.)…

Read the entire article here.

They considered themselves white, but DNA tests told a more complex story

The Washington Post
2018-02-06

Tara Bahrampour

As more Americans take advantage of genetic testing to pinpoint the makeup of their DNA, the technology is coming head to head with the country’s deep-rooted obsession with race and racial myths. This is perhaps no more true than for the growing number of self-identified European Americans who learn they are actually part African.

For those who are surprised by their genetic heritage, the new information can often set into motion a complicated recalibration of how they view their identity.

Nicole Persley, who grew up in Nokesville, Va., was stunned to learn that she is part African. Her youth could not have been whiter. In the 1970s and ’80s in her rural home town, she went to school with farmers’ kids who listened to country music and sometimes made racist jokes. She was, as she recalls, “basically raised a Southern white girl.”

But as a student at the University of Michigan: “My roommate was black. My friends were black. I was dating a black man.” And they saw something different in her facial features and hair.

“I was constantly being asked, ‘What are you? What’s your ethnic background?’ ”…

…The test results can present an intriguing puzzle. When a significant amount of African DNA shows up in a presumably white person, “there’s usually a story — either a parent moved away or a grandparent died young,” said Angela Trammel, an investigative genealogist in the Washington area. “Usually a story of mystery, disappearance — something.”

For Persley, 46, the link turned out to be her grandfather, who had moved away from his native Georgia and started a new life passing as white in Michigan. He married a white woman, who bore Persley’s father…

Read the entire article here.

What Doctors Should Ignore

The New York Times
2017-12-08

Moises Velasquez-Manoff

Joan Wong

Science has revealed how arbitrary racial categories are. Perhaps medicine will abandon them, too.

Sickle cell anemia was first described in 1910 and was quickly labeled a “black” disease. At a time when many people were preoccupied with an imagined racial hierarchy, with whites on top, the disease was cited as evidence that people of African descent were inferior. But what of white people who presented with sickle cell anemia?

Doctors twisted themselves into knots trying to explain those cases away. White sickle cell patients must have mixed backgrounds, they contended — a black forebear they didn’t know about perhaps, or one they didn’t want to mention. Or maybe white patients’ symptoms didn’t stem from sickle cell anemia at all, but some other affliction. The bottom line was, the disease was “black,” so by definition white people couldn’t get it.

Today, scientists understand the sickle cell trait as an adaptation to malaria, not evidence of inferiority. One copy of the sickle cell trait protects against malaria. Having two can cause severe anemia and even death. Scientists also know that the trait is common outside Africa across the “malaria belt” — the Arabian Peninsula, India and parts of the Mediterranean Basin. And people historically considered white can, in fact, carry it. In the Greek town of Orchomenos, for example, the gene is more prevalent than it is among African-Americans.

We know all this, and yet the racialization of the disease, the idea that it occurs only in people of sub-Saharan African descent, persists. “When I talk to medical students, I get this all the time — ‘Sickle cell is a black trait,’ ” Michael Yudell, chairman of the department of community health and prevention at the Dornsife School of Public Health at Drexel University, told me.

That’s worrisome for many reasons, he says, chief among them that it may result in subpar medical care for some patients. Case in point: California’s universal blood disorder screening program has identified thousands of nonblack children with the sickle cell trait and scores with the disease — patients who, had doctors stuck to received “wisdom,” might have been missed.

Professor Yudell belongs to a growing chorus of scholars and researchers who argue that in science at least, we need to push past the race concept and, where possible, scrap it entirely. Professor Yudell and others contend that instead of talking about race, we should talk about ancestry (which, unlike “race,” refers to one’s genetic heritage, not innate qualities); or the specific gene variants that, like the sickle cell trait, affect disease risk; or environmental factors like poverty or diet that affect some groups more than others…

Read the entire article here.

Tests of fit of historically-informed models of African American Admixture

American Journal of Physical Anthropology
Volume 165, Issue 2, February 2018
Pages 211–222
DOI: 10.1002/ajpa.23343

Jessica M. Gross
Department of Anthropology
University of New Mexico

African American populations in the U.S. formed primarily by mating between Africans and Europeans over the last 500 years. To date, studies of admixture have focused on either a one-time admixture event or continuous input into the African American population from Europeans only. Our goal is to gain a better understanding of the admixture process by examining models that take into account (a) assortative mating by ancestry in the African American population, (b) continuous input from both Europeans and Africans, and (c) historically informed variation in the rate of African migration over time.

Materials and methods

We used a model-based clustering method to generate distributions of African ancestry in three samples comprised of 147 African Americans from two published sources. We used a log-likelihood method to examine the fit of four models to these distributions and used a log-likelihood ratio test to compare the relative fit of each model.

Results

The mean ancestry estimates for our datasets of 77% African/23% European to 83% African/17% European ancestry are consistent with previous studies. We find admixture models that incorporate continuous gene flow from Europeans fit significantly better than one-time event models, and that a model involving continuous gene flow from Africans and Europeans fits better than one with continuous gene flow from Europeans only for two samples. Importantly, models that involve continuous input from Africans necessitate a higher level of gene flow from Europeans than previously reported.

Discussion

We demonstrate that models that take into account information about the rate of African migration over the past 500 years fit observed patterns of African ancestry better than alternative models. Our approach will enrich our understanding of the admixture process in extant and past populations.

Read or purchase the article here.

Southerner For Miscegenation

The Denver Star (Source: Chronicling America: Historic American Newspapers)
Denver, Colorado
Saturday, 1913-07-05
page 1, columns 1-2

(New York Age.)

Prof. H. E. Jordan, a Southern white man, of the University of Virginia, advances an opinion which means that miscegenation will be the ultimate solution of the Negro problem. He makes the assertion in an article in The Popular Science Monthly for June in which occurs the remarkable statement that the mulatto is the leaven with which to lift the Negro race.

Prof. Jordan does not hold to the commonly accepted accepted opinion that half-breeds are inferior to the race of either parent. On the contrary he thinks that the half-breed is usually a better and more useful citizen than the man of pure race.

He believes that the solution of the Negro problem is facilitated instead of complicated by the presence of the mulatto, and claims that the breed has been proved most effective in some other lands notably in the English island colony of Jamaica. In Jamaica there are about 50,000 mulattoes in a population of 700,000, and it is noted he says, that the mulattoes contribute the artisans, the teachers, the business and professional men. “They are the very backbone of wonderful Jamaica.”

There Will Be More Mulattoes.

There are now two million mulattoes in-the United States and there will be more, says Prof. Jordan, if statements are worth anything, He claims that the prevalence of defective half-breeds is due to mating of inferior types of the black and white races but that a Negro-white cross does not inherently mean degeneracy.

Discussing this phase of the question, he says:

“I admit the general inferiority of the black-white offspring. Defective half-breeds are too prevalent and obtruding to permit denying the apparently predetermined result of such crosses. But I emphatically deny that the result is inherent in the simple fact of cross breeding. There are not a few very striking exceptions among my own acquaintances. Absolutely the best mulatto family I have ever known traces its ancestry back on both the maternal and paternal side to high grade white grandfathers and pure type Negro grandmothers. The reason for the frequently inferior product of such crosses is that the better elements of both races under ordinal conditions of easy mating with their own type feel an instinctive repugnance to intermarriage. Under these usual circumstances a white man who stoops  to mating with a colored woman or a colored woman who will accept a white man, are already of quite inferior type. One would not expect inferior offspring from such parents if it concerned horses or dogs.

Why should we expect the biologically impossible in the case of man? If the parents are of good type, so will be the offspring. And even with the handicap of frequently degraded white ancestry, the mulatto of our country forms the most intelligent and potentially useful element of our colored population.

Negro-White Cross Does Note Mean Degeneracy.

The fact, then, is established beyond all possibility of disproof, it seems to me that a Negro-white cross does not inherently mean degeneracy; and that the mulatto, measured by present day standards of Caucasian civilization, from economic and civic standpoints, is an advantage upon a pure Negro. In further support of the potency of even a relative remote white ancestor may be cited the almost unique instance of the Moses of the colored race, Booker T. Washington. As one mingles day by day with colored people of all grades and shades one is impressed with the significance of even small admixtures of Caucasian blood. What elements of hope or menace lie hidden in these mulatto millions? How can they help to solve or confuse the ‘problem’?”

Prof. Jordan asserts that the Negro cannot undergo mental development beyond a certain maximum, and that it is possible to approximate a “pure” mulatto race combining the best elements of black and white. We can approach it, he holds, by education and the fostering of Negro racial pride. He says further:

“The point seems clear that in the presence of 2,000,000 mulattoes, steadily increasing in number, we have a key to the solution of our problem, The mulatto is the leaven with which to lift the Negro race. He serves as our best lever for Negro elevation.”

The mulatto does not feel the instinctive mental nausea to Negro mating. He might even be made to feel a sacred mission in this respect. Possibility of marriage with mulatto would be a very real incentive to serious efforts for development on the part of the Negro. The logical conclusion may follow in the course of the ages. At any rate, from present indications our hope lies in the mulatto.

A wise statesmanship and rational patriotism will make every effort to conserve him, and imbue him with his mission in the interests of brotherhood of a better man. The problem seems possible of solution only as the mulatto will undertake it, with the earnest help of the white.