Marcus Edred Pembrey FMedSci (born 20 April 1943) is a British clinical geneticist with a research interest in non-Mendelian inheritance in humans. He is Emeritus Professor of Paediatric Genetics at UCL Great Ormond Street Institute of Child Health and Visiting Professor of Paediatric Genetics, University of Bristol. He featured in a 2005 'Horizon' program on BBC television called 'the Ghost in Your Genes'[1]. Source: Wikipedia (en)