© 2018 The Author. Published by Elsevier Inc.This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.As growing numbers of gay men enter into the reproductive realm, opportunities emerge for the rewriting or revision of kinship ties. Given the hegemonic status of genetic matter in the context of kinship, however, it is perhaps unsurprising that, amongst gay men, there are complex negotiations over how, and in what instances, genetic matter will be made to matter. This paper explores the question of genetic matter in the con...