Normal growth of an animal, from the fertilised egg through to end of life maturity, requires concerted action of all the genes found in the animal genome. Not all genes are active at any one stage or in any one cell type. Gene expression is dynamic yet programmed. Sometimes this programming goes awry and disease ensues. Research in the Division of Developmental Biology aims to characterise, understand and ultimately exploit the ever changing profile of gene expression found in mammals. This will allow the development of a better understanding of biology which in turn will enable new biotech, agricultural and biomedical advances to become reality.