Random Families: Genetic Strangers, Sperm Donor Siblings, and the Creation of New Kin, Hertz Rosanna, Nelson Margaret K.

Random Families asks: Do shared genes make you a family? What do couples do when they discover that their children shares half their DNA with a dozen or more other offspring from the same sperm donor? What do kids find in common with their donor siblings? What becomes of these chance networks once parents and donor siblings find one another?

Based on over 350 interviews with children (ages 10-28) and their parents from all over the U.S., Random Families chronicles the chain of choices that couples and single mothers make from what donor to use to how to participate (or not) in donor sibling networks. Children reveal their understanding of a donor, the donors spot on the family tree and the meaning of their donor siblings. Through rich first-person accounts of network membership, the book illustrates how these extraordinary relationships -- woven from bits of online information and shared genetic ties -- are transformed into new possibilities for kinship.