Controlling animal growth and body size - does fruit fly physiology point the way?
The question of how growth and size are controlled has fascinated generations of biologists. However, the underlying mechanisms still remain unclear. The last year or so has seen a flurry of reports on the control of growth and body size in Drosophila, and a central theme to these papers is the idea of signaling between organs as a control mechanism for overall body growth and development. While this concept is obviously not new, these fly studies now open up the possibility of using a genetically tractable system to dissect in detail how organ-to-organ communication dictates body size.
Clark Smith Brain Tumor Center, Southern Alberta Cancer Research Institute, Department of Biochemistry and Molecular Biology, University of Calgary Alberta, T2N 1N4 Canada.
Savraj S
SS
Grewal