  Public policy should take into account public opinion and comply with norms of transparency (Baylis 2009). With regard to public opinion, the UK Human Fertilisation and Embryology Authority (HFEA) conducted a 12-week public consultation in 2007 on chimeras and hybrids, providing background materials on the current state of science, law, and ethics and then soliciting people’s opinions on a variety of ethical and policy questions (Human Fertilisation and Embryology Authority 2007a). Although the consultation did not focus on human/animal chimeras as defined in this entry, it did find significance opposition to creating human/non-human hybrids, inserting animal cells into human embryos, and inserting mitochondrial DNA from animals into human embryos. In terms of transparency, a review by Baylis (ibid.) of the consultation process found it to be “an exercise in strategic public relations” in many respects (ibid., 47) in which the HFEA’s preexisting policy preference led to bias in the presentation and discussion of options as well as their interpretation and reporting of the results (ibid.). 