This thesis proposes the relevance of epigenetic research to feminist studies and gender studies, and vice versa, and asks how epigenetics speaks to the so-called sex-gender distinction. It also discusses what epigenetics could potentially tell us about ourselves, and our place in a world where we are all creatures of both nature and nurture. The author proposes that with its promise of insight into the relationship of the body to environment and experience over time, epigenetics could be an inextricable link between nature and nurture. Combining a modified version of diffractive analysis, and gender/sex as an analytical device, the author engages with epigenetic research and its representation in popular science and in the public imaginary. After discussing the striations of feminist discourse on permeable bodies, the author proposes epigenetics as another layer in the strata, placing epigenetics within feminist and gender studies literature and discourse. Noting that as research gains ground the way in which the public imagines and describes epigenetics gives shape to its materialization and development, this thesis asserts the urgent need for social sciences, and in particular feminist and gender studies, to engage in critical discourse with epigenetic research as it is carried out and as it is translated to the wider public.