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Table 3 The effects of mutation rate on phenotype frequencies

From: The effects of low-impact mutations in digital organisms

Logic operation

Frequency with default mutation rate

Frequency with reduced mutation rate

P-value

NOT

0.93

0.96

0.00018*

NAND

0.91

0.93

0.68

AND

0.77

0.84

0.29

ORNOT

0.87

0.95

0.013*

OR

0.86

0.92

1.7E-07*

ANDNOT

0.88

0.92

0.00017*

NOR

0.85

0.90

8.5E-08*

XOR

0.73

0.77

0.51

EQUALS

0.78

0.83

0.15

  1. The effects of mutation rate on phenotype frequencies. This table shows the average end-of-experiment frequencies for logic operations evolving (1) in the default environment and (2) in an environment with a reduced mutation rate. P-values are for two-tailed two-sample t-tests with equal variances, and significant values are marked with an asterisk*. All calculations used only nonzero frequency values (operations that were not present were not considered).