Figure 1From: A model combining cell physiology and population genetics to explain Escherichia coli laboratory evolutionMinimal modular model of E. coli. X is the external nutrient concentration, n the number of molecules of nutrient inside the cell, v the cell volume and s the number of molecules of signal. n, v and s are variables, X is a parameter. The nutrient is incorporated in the cell at a rate r i and is consumed at rates r g (for growth) and r a (for adaptation).Back to article page