Scholarly perspectives on the mixed race experience.
Choice—especially around identity—is a fascinating subject in and of itself. How we choose to identify is intensely personal for many, and perhaps particularly perplexing for some Mixed-race identified people, as it inherently calls into question our notions of “race”. Having said that, I can only speak for myself, and I have chosen to identify as Black-Mixed. Although how I have identified in the past has evolved, and will most like continue to do so into the future, I have always held my Blackness as the centre of gravity—the place from which all my many other identities flow.
“Historically, these ideas serve to deny the presence of Indigenous peoples and Afro-descendants. To say that they no longer exist, that they have been absorbed by the process of mestizaje,” says [Juliet] Hooker, who experienced this as a girl when her family moved from the Afro-Caribbean coast of Nicaragua, where she grew up, to its mostly mestizo capital. The people there rarely identified as Black, even the ones who looked like her, and repeatedly asked why she identified that way. In 2017, Hooker explored the origins and history of the mestizo myth in her book Theorizing Race in the Americas.
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Genetic studies have found a striking amount of diversity among people in Mexico. Credit: Stephania Corpi Arnaud for Nature
Researchers are trying to dismantle the flawed concept of homogeneous racial mixing that has fostered discrimination in Mexico, Brazil and other countries.
Nicéa Quintino Amauro always knew who she was.
She was born in Campinas, the last city in Brazil to prohibit slavery in 1888. She grew up in a Black neighbourhood, with a Black family. And a lot of her childhood was spent in endless meetings organized by the Unified Black Movement, the most notable Black civil-rights organization in Brazil, which her parents helped to found to fight against centuries-old racism in the country. She knew she was Black.
But in the late 1980s, when Amauro was around 13 years old, she was told at school that Brazilians were not Black. They were not white, either. Nor any other race. They were considered to be mestiços, or pardos, terms rooted in colonial caste distinctions that signify a tapestry of European, African and Indigenous backgrounds. And as one single mixed people, they were all equal to each other.
The idea felt odd. Wrong, even. “To me, it seemed quite strange,” says Amauro, now a chemist at the Federal University of Ubêrlandia in Minas Gerais and a member of the Brazilian Association of Black Researchers. “How can everyone be equal if racism exists? It doesn’t make sense.”
Amauro’s concerns echo across Latin America, where generations of people have been taught that they are the result of a long history of mixture between different ancestors who all came, or were forced, to live in the region…
Humans settled the Caribbean about 6,000 years ago, and ceramic use and intensified agriculture mark a shift from the Archaic to the Ceramic Age at around 2,500 years ago1,2,3. Here we report genome-wide data from 174 ancient individuals from The Bahamas, Haiti and the Dominican Republic (collectively, Hispaniola), Puerto Rico, Curaçao and Venezuela, which we co-analysed with 89 previously published ancient individuals. Stone-tool-using Caribbean people, who first entered the Caribbean during the Archaic Age, derive from a deeply divergent population that is closest to Central and northern South American individuals; contrary to previous work4, we find no support for ancestry contributed by a population related to North American individuals. Archaic-related lineages were >98% replaced by a genetically homogeneous ceramic-using population related to speakers of languages in the Arawak family from northeast South America; these people moved through the Lesser Antilles and into the Greater Antilles at least 1,700 years ago, introducing ancestry that is still present. Ancient Caribbean people avoided close kin unions despite limited mate pools that reflect small effective population sizes, which we estimate to be a minimum of 500–1,500 and a maximum of 1,530–8,150 individuals on the combined islands of Puerto Rico and Hispaniola in the dozens of generations before the individuals who we analysed lived. Census sizes are unlikely to be more than tenfold larger than effective population sizes, so previous pan-Caribbean estimates of hundreds of thousands of people are too large5,6. Confirming a small and interconnected Ceramic Age populatio7, we detect 19 pairs of cross-island cousins, close relatives buried around 75 km apart in Hispaniola and low genetic differentiation across islands. Genetic continuity across transitions in pottery styles reveals that cultural changes during the Ceramic Age were not driven by migration of genetically differentiated groups from the mainland, but instead reflected interactions within an interconnected Caribbean world1,8.
Deepti Gurdasani Wellcome Trust Sanger Institute Genome Campus Hinxton, Cambridge, United Kingdom
et. al.
Given the importance of Africa to studies of human origins and disease susceptibility, detailed characterization of African genetic diversity is needed. The African Genome Variation Project provides a resource with which to design, implement and interpret genomic studies in sub-Saharan Africa and worldwide. The African Genome Variation Project represents dense genotypes from 1,481 individuals and whole-genome sequences from 320 individuals across sub-Saharan Africa. Using this resource, we find novel evidence of complex, regionally distinct hunter-gatherer and Eurasian admixture across sub-Saharan Africa. We identify new loci under selection, including loci related to malaria susceptibility and hypertension. We show that modern imputation panels (sets of reference genotypes from which unobserved or missing genotypes in study sets can be inferred) can identify association signals at highly differentiated loci across populations in sub-Saharan Africa. Using whole-genome sequencing, we demonstrate further improvements in imputation accuracy, strengthening the case for large-scale sequencing efforts of diverse African haplotypes. Finally, we present an efficient genotype array design capturing common genetic variation in Africa.
The Eugenics Society has established a second Leonard Darwin scholarship, which is to be devoted to the investigation of racial crossing. The first holder is J. C. Trevor, a graduate of Oxford in anthropology, who has spent the last two years studying mixtures of negro and white stocks in the United States, with the aid of a Commonwealth fellowship. He has collected ethnological material in the Virgin Islands and in East Africa, and with Dr. Dudley Buxton has made an investigation of English medieval skulls. He has also a collection of biometric material on West African and American negro crania. Mr. Trevor will devote a year to a survey of the literature on the subject of inter-racial crossing…
