Table 1.

Fraction of mutations that were neutral (first column), or positive (second column); total number of neutral or positive genomes found (fourth column); and total mutants examined (fifth column) as a function of the number of mutations n, for the dominating genotype before the transition

n	fν(n)	f+(n)	Total	Tried
1	0.1418	0.034	492	2,700
2	0.0203	0.0119	225	10,000
3	0.0028	0.0028	100	32,039
4	4.6 10−4	6.5 10−4	100	181,507
5	5.7 10−5	1.4 10−4	100	1.3 106
6	8.6 10−6	2.9 10−5	100	7.3 106
7	1.3 10−6	5.7 10−6	100	5.1 107
8	1.8 10−7	1.1 10−6	34	1.0 109