We’re reposting some of our favourite episodes over the holiday period. In this episode from March 2019, we told the often-overlooked stories of four women who helped to shape the science of life: Esther Lederberg, Harriet Creighton, Tsuneko Okazaki and Martha Chase.Full show notes, transcript, music credits and references online at GeneticsUnzipped.comFollow us on Twitter @GeneticsUnzipGenetics Unzipped is written and presented by Kat Arney with audio production by Hannah Varrall and additional research and scripting by Emily Nordvang.Genetics Unzipped 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.