Environments. Environmental signals (green) and nutrient abundance for five environments (bottom to top: AND, OR, A, B, XOR) shown as a function of time steps within one epoch. Nutrient presence is a delayed function of the two signals. One epoch is shown for each environment, which consists of 4,500 time units.
Mozhayskiy and Tagkopoulos BMC Bioinformatics 2012 13(Suppl 10):S10 doi:10.1186/1471-2105-13-S10-S10