The law's response to reproductive genetic testing depends on a number of assumptions about choice, causation and control which need to be questioned. From the preconception stage forward, the illusion of choice may raise such fundamental questions as the woman's choice not to be tested, limits on genetic information, and the availability of reproductive options. In turn, assumptions about choice raise questions about the responsibility for results and the connection between choice and causation in the context of wrongful birth and life actions. Assumptions made about control over reproductive choice and over causing 'harm', will impact on the development of future law.