on networks of cancer initiation: Tumor suppressor genes and chromosomal instability. J theor Biol 223: 433-450. 9. Lorenz A, J Fuchs, R Burger, J Loidl (2003). Chromosome pairing does not contribute to nuclear architecture in vegetative yeast cells. Eulcaryotic Cell 2: 856-866. 10. Michor F, SA Fra