From six-toed cats to cyclops lambs, Kat Arney and Professor Bob Hill from the Institute of Genetics and Cancer at the University of Edinburgh explore the fascinating story and science behind the Sonic Hedgehog gene. Full show notes, transcript, music credits and references online at GeneticsUnzipped.com Follow us on Twitter @GeneticsUnzipGenetics Unzipped is written and presented by Kat Arney with audio production by Hannah Varrall. This podcast is produced by First Create the Media for the Genetics Society - one of the oldest learned societies in the world dedicated to supporting and promoting the research, teaching and application of genetics.