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Forensic DNA Phenotyping (FDP) encompasses an emerging set of technologies aimed at predicting physical characteristics of unknown suspects from crime scene DNA traces. In its application FDP involves a variety of settings: research laboratories where FDP tests are developed, forensic laboratories where FDP technologies are used to analyze crime scene DNA traces, and finally the criminal investigation, where results of tests are applied towards finding suspects. In this paper I show that the practices in each of these settings work by a different set of concerns, which I articulate by adopting the notion of "logics" as developed by Annemarie Mol. I ethnographically trace FDP from research lab to investigation, identifying three different logics along the way: those of accuracy, commonality, and valuing respectively. Taken together, I show that these practices do not linearly accumulate but form a heterogeneous assemblage, adding nuance to discussions surrounding FDP. [ABSTRACT FROM AUTHOR]

Forensic DNA phenotyping (FDP) encompasses a set of technologies geared towards inferring externally visible characteristics from DNA traces found at crime scenes. As such, they are used to generate facial renderings of unknown suspects. First, through the configuration of molecularly inscribed parts, pigmentary traits are assembled into a probabilistic rendition of the face; second, facial features are landscaped from DNA to produce a metrically rendered face; third, by geographically ordering DNA, an unknown suspect is attributed a particular genetic ancestry as to give him a face. We ethnographically examine these FDP practices within and beyond the laboratory to demonstrate how the promise of individuality—namely the face of the suspect—comes with the production of collectives. And it is precisely these collectives that are a matter of concern in the context of crime, as they rapidly become racialized. We show that each of these FDP practices folds in disparate histories—variously implicating the individual and the collective—while giving rise to different versions of race. The "race sorting logic" (Fullwiley in Br J Sociol 66(1):36–45, 2015) displays the tenacity of race in genetics research and its practical applications. [ABSTRACT FROM AUTHOR]