Before revision:  Using finite size scaling analysis, we determine \phi_c^{\infty}\approx 0.44 for a sufficiently long polymer (N\gg 1)  .
After revision:  Using finite size scaling analysis, we determine \phi_c^{\infty}\approx 0.44 for a sufficiently long polymer (N\gg 1) allows us to discuss genome dynamics using \phi as a single parameter .