Table 1. The mean and standard deviation (in parentheses) of the number of landscape changes on the given tree under the stochastic model with the Poisson parameter λ.

Tree	“Simple”		Saccharomyces mtDNA		Simulated birth-death		Metazoan mtDNA
#leaves:	4		100		100		3558
sum lengths:	8		0.1585		5622.5		95.0
	expected	observed	expected	observed	expected	observed	expected	observed
λ = 0.1	0.8	0.8 (0.920)	0.01585	0.0183 (0.135)	5562.25	562.6 (24.0)	9.5	9.69 (3.61)
λ = 1	8	7.909 (2.83)	0.1585	0.152 (0.404)	5622.5	5623.956 (78.28)	95	95.14 (9.69)
λ = 10	80	79.96 (8.891)	1.585	1.583 (1.23)	56226	56237.02 (208.0)*	950	950.16 (33.0)

*The simulator ran out of memory on 1000 parallel instances on the birth-death tree with λ = 10, so the result is shown for 100 instances.