Over the past twenty years, DNA ancestry testing has morphed from a niche market into a booming international industry that encourages members of the public to answer difficult questions about their identity by looking to the genome. At a time of intensified interest in issues of race and racism, the burgeoning influence of corporations like AncestryDNA and 23andMe has sparked debates about the commodification of identity, the antiracist potential of genetic science, and the promises and pitfalls of using DNA as a source of "objective" knowledge about the past.
Permanent Markers: Race, Ancestry, and the Body After the Genome) (University of North Carolina Press, 2021) engages these debates by looking at the ways genomic ancestry testing has been used in Brazil and the United States to address the histories and legacies of slavery, from personal genealogical projects to collective racial politics. Reckoning with the struggles of science versus capitalism, "race-blind" versus "race-positive" public policies, and identity fluidity versus embodied experiences of racism, Permanent Markers seeks to explain why those of us in societies that have broadly embraced the social construction of race continue to search for, and find, evidence that our bodies are marked permanently by the past.
Sarah Abel is British Academy Postdoctoral Fellow at the University of Cambridge's Centre of Latin American Studies.
Reighan Gillam is Associate Professor in the Department of Anthropology at University of Southern California.
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