TABLE 2.

Fitness values for the four considered genotypes in absence and presence of antimicrobial treatment

Genotype	Fitness in the absence of drug	Fitness in the presence of drug
++	1	1 − a
+C	1 − cC	(1 − a)(1 − cC)
R+	1 − cR	[1 − a(1 − eR)](1 − cR)
RC	1 − cR(1 − eC,no drug)	[1 − a(1 − eR)][1 − cR(1 − eC,drug)]