The MRC Human Genetics Unit is at the forefront of research into human genetics. Its role is to advance the understanding of genetic factors implicated in human disease and normal and abnormal development. The Unit's programmes of work cover the themes of developmental genetics, chromosome biology and models for human genetic diseases. The unit is one of the largest MRC research establishments supporting approximately 220 scientists, support staff, fellows, PhD students and visiting scientists, of whom approximately 150 are directly funded by the MRC. Our scientific aims are: