Assisted reproduction challenges and reinforces traditional understandings of family, kinship and identity. Sperm, egg and embryo donation and surrogacy raise questions about relatedness for parents, children and others involved in creating and raising a child. How socially, morally or psychologically significant is a genetic link between a donor-conceived child and their donor? What should children born through assisted reproduction be told about their origins? Does it matter if a parent is genetically unrelated to their child? How do experiences differ for men and women using collaborative...