TABLE 1.

Parameter values used in the simulations

Parameter	Range tested	Empirical estimates
SCE ratea	0.01–1.0	No estimate; 0.2 in yeast (Petes 1980), 0.04 in Daphnia (McTaggart et al. 2007)
InterCE ratea	10−2−10−4	10−4 (Williams et al. 1989)
SCE, InterCE offset	1–16 units	No estimate
Selection, w1	10–90 units	40 units (Hawley and Marcus 1989; Jakubczak et al. 1992)
Selection, w2	60–100 units	No estimate
Loop deletion coefficienta	1–25 (× 10−5)	No estimate
Deletion offset	1–15 units	No estimate
Retrotransposition ratesa	0.004–0.1	0.0015–0.13 (Perez-Gonzalez and Eickbush 2002; Zhang et al. 2008)

^aEvents per rDNA locus per generation.