title: Coexistence of two asexual strains on a single resource.
abstract: A stable equilibrium was obtained for two F(-) strains of Escherichia coli in a glucose minimal medium. This equilibrium cannot readily be explained by traditional models of population genetics and apparently violates some forms of the ecological principle of competition exclusion. A mechanism involving an inverse relationship between the growth rates of these strains at the exponential and "stationary" phases is suggested as a possible explanation for the observed stable equilibrium.
mesh_terms: D001089:Arabinose / Q000378:metabolism; D003470:Culture Media; D004463:Ecology; D004926:Escherichia coli / Q000254:growth & development* / Q000378:metabolism; D005690:Galactose / Q000378:metabolism; D005787:Gene Frequency; D005827:Genetics, Microbial; D005828:Genetics, Population; D005838:Genotype; D005947:Glucose
chemical_list: D003470:Culture Media; D001089:Arabinose; D005947:Glucose; D005690:Galactose