ContinuingtheseriesinwhichProfessorSteve
Jones examines the different blood groups and their hidden influences on people's lives.
2: The Cultural Impact. For many years anthropologists used blood groups as a way of tracking the movement of people. While the rest of south Wales is mainly Os, in Pembrokeshire A predominates - a throw back to their Norman and Flemish ancestors. Meanwhile in Japan, blood groups are used by the young to analyse each other's character and personality. Producer Andrea Kidd