I became interested in reproductive ethics when, fifteen years ago, my husband and I underwent preimplantation genetic diagnosis (PGD, which is in vitro fertilization, or IVF, with the added step of genetic screening) to try to conceive a child who would not inherit my genetic bone disorder, osteogenesis imperfecta (OI). When the wrenching decisions required by the PGD process forced us to address theological and moral questions raised
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