pinaka tata titi praktis, sujana mikrobiologi minehin indik Bakteri utawi Archaea antuk undagan gen RNA ribosom 16S sané mesib saking 97% sareng sané tiosan patut katureksain antuk hibridisasi DNA-DNA mangda prasida mastikayang napiké ipun ngranjing ring spesies sané pateh napi matiosan.
As a rule of thumb, microbiologists have assumed that kinds of Bacteria or Archaea with 16S ribosomal RNA gene sequences more similar than 97% to each other need to be checked by DNA-DNA hybridisation to decide if they belong to the same species or not.