Strain 1 Heat Strain 2 0%o Homology 100% Homology
DNA-DNA hybridization 100% Homology + Heat 0% Homology Strain 1 Strain 2
IN-FDNADrtEaton o Groups bacterial strains into specles o Below species level little or no relatedness
DNA-DNA hybridization Groups bacterial strains into species Below species level • little or no relatedness
16STRNASelueICI! o simlartyabovespecieslevel Dalowsre lateness comparisonsofall bacteria n closelyre ated species may heidentiieal o developmentofclnical tests based Ol sequence
16S rRNA Sequencing similarityabove species level allows relatedness comparisons of all bacteria closely related bacterial species may be identical development of clinical tests based on sequence