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Dr Steve Jones, Reader in Genetics at University College, London gives the first of six Reith Lectures on the new biological insight into humanity.

He explains how the study of genetics has been transformed in recent decades and argues that while fossil records and ancient myths preserve some limited truths about humanity's origins; our genes hold a far more complete picture. Like anatomy, sociology or psychoanalysis, he says, genetics can give us a significant glimpse into aspects of our history and about what it means to be human.