1. Haldane, J. B. S. in Possible Worlds and Other Papers 20–28 (Harper & Brothers, New York, 1928).
2. Colinvaux, P. Why Big Fierce Animals Are Rare. An Ecologist's Perspective (Princeton University Press, Princeton, New Jersey, 1978).
3. Su, T. T. The regulation of cell growth and proliferation during organogenesis. In Vivo 14, 141–148 ( 2000).
4. Conlon, I. & Raff, M. Size control in animal development . Cell 96, 235–244 (1999).
5. Galitski, T., Saldanha, A., Styles, C., Lander, E. & Fink, G. Ploidy regulation of gene expression. Science 285, 251–254 ( 1999).