Twenty-first-century biology rejects genetic determinism, yet an exaggerated view of the power of genes in the making of bodies and minds remains a problem. What accounts for such tenacity? This article reports an exploratory study suggesting that the common reliance on Mendelian examples and concepts at the start of teaching in basic genetics is an eliminable source of support for determinism. Undergraduate students who attended a standard ‘Mendelian approach’ university course in introductory genetics on average showed no change in their (...) determinist views about genes. By contrast, students who attended an alternative course which, inspired by the work of a critic of early Mendelism, W. F. R. Weldon, replaced an emphasis on Mendel’s peas with an emphasis on developmental contexts and their role in bringing about phenotypic variability, were less determinist about genes by the end of teaching. Improvements in both the new Weldonian curriculum and the study design are in view for the future. (shrink)

Recombinant DNA technology is an essential area of life engineering. The main aim of research in this field is to experimentally explore the possibilities of repairing damaged human DNA, healing or enhancing future human bodies. Based on ethnographic research in a Czech biochemical laboratory, the article explores biotechnological corporealities and their specific ontology through dealings with bio-objects, the bodywork of scientists. Using the complementary concepts of utopia and heterotopia, the text addresses the situation of bodies and bio-objects in a laboratory. (...) Embodied utopias are analyzed as material semiotic phenomena that are embodied by scientists in their visions and emotions and that are related to potential bodies and to future, not-yet-actualized embodiments. As a counterpart to this, the text explores embodied heterotopias, which are always the other spaces, like biotechnological bio-objects that are simulated in computers or stored in special solutions. (shrink)