Classification

Classification

1. Phenetic

   • based on observable characteristics
   • method
     • numerical taxonomy
       • simple matching coefficient
       • Jaccob coeefficient
     • Unweighted comparison
       • info will converted by computer
         • 80% = same species; 60% = same genus
       • low accuracy
   • regardless of ancestral linkage

2. Phylogenetic

   • based on specific gene (16S rDNA or 18S rDNa)
   • based on evolutionary relationship
   • Method
     • Sequencing of 16S rDNA, alignment with known sequence and finally show evolutionary relationship through phylogenetic tree
       • due to highly conserved genetic sequence and the advancement in sequence technique

3. Genotypic

   • Method
     • Polyphasic taxonomy
       • apply more than one method for the identification and classification
   • compare genetic similarity between organisms